euiyulsong/threedata · Datasets at Hugging Face

id stringlengths 8 22 ⌀	question stringlengths 17 586 ⌀	choices dict	answerKey stringclasses 9 values	prompt stringlengths 74 739 ⌀	chosen stringlengths 14 159 ⌀	rejected stringlengths 13 146 ⌀	text stringlengths 15 811
null	null	null	null	null	null	null	The homologous chromosome pairs separate, but the individual chromosomes, each consisting of two sister chromatids, remain intact.
Mercury_7009485	An atom will always have	{ "label": [ "A", "B", "C", "D" ], "text": [ "a single, negatively-charged nucleus.", "equal numbers of protons and electrons.", "\"shared\" electrons from another atom.", "a stable number of charged neutrons." ] }	B	Question: An atom will always have (A) a single, negatively-charged nucleus. (B) equal numbers of protons and electrons. (C) "shared" electrons from another atom. (D) a stable number of charged neutrons.	Answer: (B) equal numbers of protons and electrons.	Answer: (C) "shared" electrons from another atom.	Question: An atom will always have (A) a single, negatively-charged nucleus. (B) equal numbers of protons and electrons. (C) "shared" electrons from another atom. (D) a stable number of charged neutrons. Answer: (B) equal numbers of protons and electrons.
null	null	null	null	null	null	null	The decrease in the number of amphibians is an indicator of how gravely affected the ecosystem is.
null	null	null	null	null	null	null	Question: Algae oil is more concentrated in which essential nutrients? (A) vitamin C and iron (B) omega-3s and DHA (C) calcium and vitamin D (D) carbohydrates and proteins Answer: (B) omega-3s and DHA
null	null	null	null	null	null	null	The freshly created primary spermatocytes (I) now enter into the first meiosis.
null	null	null	null	null	null	null	For this reason the plants that live in these soils have evolved into carnivorous plants that capture and digest insects as a means of obtaining nitrates.
null	null	null	null	null	null	null	The leaves may be spirally arranged or grouped in four vertical rows along the shoot.
null	null	null	null	null	null	null	Most peccaries reach sexual maturity.
null	null	null	null	null	null	null	Their dietary needs are fulfilled with both dry food and wet food.
Mercury_7041020	Which organisms form the base of all ecosystems?	{ "label": [ "A", "B", "C", "D" ], "text": [ "scavengers", "producers", "consumers", "decomposers" ] }	B	Question: Which organisms form the base of all ecosystems? (A) scavengers (B) producers (C) consumers (D) decomposers	Answer: (B) producers	Answer: (A) scavengers	Question: Which organisms form the base of all ecosystems? (A) scavengers (B) producers (C) consumers (D) decomposers Answer: (B) producers
Mercury_7030048	If a student gets a chemical splashed into an eye, what is the most appropriate first action to be taken?	{ "label": [ "A", "B", "C", "D" ], "text": [ "wipe it with a paper towel", "call 911 for emergency services", "have someone go get the school nurse", "flush the eye with water at an eyewash station" ] }	D	Question: If a student gets a chemical splashed into an eye, what is the most appropriate first action to be taken? (A) wipe it with a paper towel (B) call 911 for emergency services (C) have someone go get the school nurse (D) flush the eye with water at an eyewash station	Answer: (D) flush the eye with water at an eyewash station	Answer: (C) have someone go get the school nurse	Question: If a student gets a chemical splashed into an eye, what is the most appropriate first action to be taken? (A) wipe it with a paper towel (B) call 911 for emergency services (C) have someone go get the school nurse (D) flush the eye with water at an eyewash station Answer: (D) flush the eye with water at an eyewash station
null	null	null	null	null	null	null	in angiosperms, seeds develop in the
null	null	null	null	null	null	null	eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass.
Mercury_SC_415368	A dragonfly develops through incomplete metamorphosis. Which stages does the dragonfly's life cycle include?	{ "label": [ "A", "B", "C", "D" ], "text": [ "egg and larva", "egg and nymph", "larva and pupa", "larva and nymph" ] }	B	Question: A dragonfly develops through incomplete metamorphosis. Which stages does the dragonfly's life cycle include? (A) egg and larva (B) egg and nymph (C) larva and pupa (D) larva and nymph	Answer: (B) egg and nymph	Answer: (D) larva and nymph	Question: A dragonfly develops through incomplete metamorphosis. Which stages does the dragonfly's life cycle include? (A) egg and larva (B) egg and nymph (C) larva and pupa (D) larva and nymph Answer: (B) egg and nymph
Mercury_7044118	What will be the most likely result for some species of animals with the continued burning of rain forests in Africa?	{ "label": [ "A", "B", "C", "D" ], "text": [ "soil erosion", "destruction of their habitats", "improved nutrients in the soil", "more grasses as a result of burning" ] }	B	Question: What will be the most likely result for some species of animals with the continued burning of rain forests in Africa? (A) soil erosion (B) destruction of their habitats (C) improved nutrients in the soil (D) more grasses as a result of burning	Answer: (B) destruction of their habitats	Answer: (D) more grasses as a result of burning	Question: What will be the most likely result for some species of animals with the continued burning of rain forests in Africa? (A) soil erosion (B) destruction of their habitats (C) improved nutrients in the soil (D) more grasses as a result of burning Answer: (B) destruction of their habitats
null	null	null	null	null	null	null	It is noteworthy that such local adaptation appears to have occurred in this population in spite of its small size, low genetic variation and high genetic load [ 3 ].
null	null	null	null	null	null	null	Question: What is being suggested? (A) A new litter box (B) A new brand of cat food (C) A new toy for cats (D) A new cat bed Answer: (A) A new litter box
null	null	null	null	null	null	null	The pulmonary artery carries blood containing carbon dioxide to the air sacs, where the gas moves from the blood to the air, according to the NHLBI.
Mercury_SC_413305	How does ice change the shape of rocks?	{ "label": [ "A", "B", "C", "D" ], "text": [ "It dissolves the rocks by pooling on surfaces.", "It breaks the rocks by expanding in openings.", "It smooths the rocks by colliding with them.", "It moves the rocks by pressing on them." ] }	B	Question: How does ice change the shape of rocks? (A) It dissolves the rocks by pooling on surfaces. (B) It breaks the rocks by expanding in openings. (C) It smooths the rocks by colliding with them. (D) It moves the rocks by pressing on them.	Answer: (B) It breaks the rocks by expanding in openings.	Answer: (C) It smooths the rocks by colliding with them.	Question: How does ice change the shape of rocks? (A) It dissolves the rocks by pooling on surfaces. (B) It breaks the rocks by expanding in openings. (C) It smooths the rocks by colliding with them. (D) It moves the rocks by pressing on them. Answer: (B) It breaks the rocks by expanding in openings.
null	null	null	null	null	null	null	Question: What qualities does the speaker appreciate about the mentioned item? (A) strong and rigid (B) soft and fluffy (C) stretchy and breathable (D) smooth and shiny Answer: (C) stretchy and breathable
NCEOGA_2013_5_31	Which best describes a characteristic of the jet stream?	{ "label": [ "A", "B", "C", "D" ], "text": [ "It forms a boundary between a cold air mass and a warm air mass.", "It creates the high winds around the eye of a hurricane.", "It forces the hot air along the equator to rise to areas in North America.", "It causes high pressure air masses to rotate clockwise." ] }	A	Question: Which best describes a characteristic of the jet stream? (A) It forms a boundary between a cold air mass and a warm air mass. (B) It creates the high winds around the eye of a hurricane. (C) It forces the hot air along the equator to rise to areas in North America. (D) It causes high pressure air masses to rotate clockwise.	Answer: (A) It forms a boundary between a cold air mass and a warm air mass.	Answer: (B) It creates the high winds around the eye of a hurricane.	Question: Which best describes a characteristic of the jet stream? (A) It forms a boundary between a cold air mass and a warm air mass. (B) It creates the high winds around the eye of a hurricane. (C) It forces the hot air along the equator to rise to areas in North America. (D) It causes high pressure air masses to rotate clockwise. Answer: (A) It forms a boundary between a cold air mass and a warm air mass.
Mercury_7108115	Rich beds of marine fossils have been found in Florida. By dating these fossils, scientists can best determine	{ "label": [ "A", "B", "C", "D" ], "text": [ "when Florida collided with the North American continent.", "the date when organisms moved onto dry land.", "the period during which Florida was covered in water.", "when the atmosphere of Earth was more humid than it is today." ] }	C	Question: Rich beds of marine fossils have been found in Florida. By dating these fossils, scientists can best determine (A) when Florida collided with the North American continent. (B) the date when organisms moved onto dry land. (C) the period during which Florida was covered in water. (D) when the atmosphere of Earth was more humid than it is today.	Answer: (C) the period during which Florida was covered in water.	Answer: (A) when Florida collided with the North American continent.	Question: Rich beds of marine fossils have been found in Florida. By dating these fossils, scientists can best determine (A) when Florida collided with the North American continent. (B) the date when organisms moved onto dry land. (C) the period during which Florida was covered in water. (D) when the atmosphere of Earth was more humid than it is today. Answer: (C) the period during which Florida was covered in water.
null	null	null	null	null	null	null	There are a number of differences, most notably in how the embryo develops.
VASoL_2007_3_22	Barry collected four different rocks. The rock with the GREATEST mass will feel the ___.	{ "label": [ "A", "B", "C", "D" ], "text": [ "heaviest", "smoothest", "sharpest", "hardest" ] }	A	Question: Barry collected four different rocks. The rock with the GREATEST mass will feel the ___. (A) heaviest (B) smoothest (C) sharpest (D) hardest	Answer: (A) heaviest	Answer: (D) hardest	Question: Barry collected four different rocks. The rock with the GREATEST mass will feel the ___. (A) heaviest (B) smoothest (C) sharpest (D) hardest Answer: (A) heaviest
null	null	null	null	null	null	null	Those traits that the environment can change.
null	null	null	null	null	null	null	Most products are produced by activities.
NCEOGA_2013_5_12	Which is an example of a single-celled organism?	{ "label": [ "A", "B", "C", "D" ], "text": [ "amoeba", "insect", "fish", "worm" ] }	A	Question: Which is an example of a single-celled organism? (A) amoeba (B) insect (C) fish (D) worm	Answer: (A) amoeba	Answer: (D) worm	Question: Which is an example of a single-celled organism? (A) amoeba (B) insect (C) fish (D) worm Answer: (A) amoeba
NYSEDREGENTS_2005_4_1	Which example describes an organism taking in nutrients?	{ "label": [ "A", "B", "C", "D" ], "text": [ "a dog burying a bone", "a girl eating an apple", "an insect crawling on a leaf", "a boy planting tomatoes in a garden" ] }	B	Question: Which example describes an organism taking in nutrients? (A) a dog burying a bone (B) a girl eating an apple (C) an insect crawling on a leaf (D) a boy planting tomatoes in a garden	Answer: (B) a girl eating an apple	Answer: (D) a boy planting tomatoes in a garden	Question: Which example describes an organism taking in nutrients? (A) a dog burying a bone (B) a girl eating an apple (C) an insect crawling on a leaf (D) a boy planting tomatoes in a garden Answer: (B) a girl eating an apple
Mercury_7183435	Living organisms require energy for biological processes. Chemical energy in a plant cell is	{ "label": [ "A", "B", "C", "D" ], "text": [ "produced in vacuoles.", "converted from solar energy.", "developed by centrioles.", "stored as kinetic energy." ] }	B	Question: Living organisms require energy for biological processes. Chemical energy in a plant cell is (A) produced in vacuoles. (B) converted from solar energy. (C) developed by centrioles. (D) stored as kinetic energy.	Answer: (B) converted from solar energy.	Answer: (A) produced in vacuoles.	Question: Living organisms require energy for biological processes. Chemical energy in a plant cell is (A) produced in vacuoles. (B) converted from solar energy. (C) developed by centrioles. (D) stored as kinetic energy. Answer: (B) converted from solar energy.
NYSEDREGENTS_2004_8_1	The items listed below were found in a science classroom. * a heart made of plastic with many of its parts labeled * clay formed to look like Earth and other planets * a giant plastic plant cell with removable cell parts These items are all examples of	{ "label": [ "1", "2", "3", "4" ], "text": [ "models", "experiments", "variables", "controls" ] }	1	Question: The items listed below were found in a science classroom. * a heart made of plastic with many of its parts labeled * clay formed to look like Earth and other planets * a giant plastic plant cell with removable cell parts These items are all examples of (1) models (2) experiments (3) variables (4) controls	Answer: (1) models	Answer: (3) variables	Question: The items listed below were found in a science classroom. * a heart made of plastic with many of its parts labeled * clay formed to look like Earth and other planets * a giant plastic plant cell with removable cell parts These items are all examples of (1) models (2) experiments (3) variables (4) controls Answer: (1) models
null	null	null	null	null	null	null	The lines on a phylogeny that trace the pathway of evolutionary lineages through time.
null	null	null	null	null	null	null	Question: What started to occur regularly from Perboewatan beginning May 20, 1883? (A) lava flow (B) steam venting (C) rock slides (D) volcanic ash Answer: (B) steam venting
Mercury_7068793	Which statement is an opinion?	{ "label": [ "A", "B", "C", "D" ], "text": [ "Chemistry and Physics are major branches of science.", "Life Science is a subject filled with interesting information.", "Geology and Oceanography are subjects in Earth Science.", "Biology is a science that studies complex organisms." ] }	B	Question: Which statement is an opinion? (A) Chemistry and Physics are major branches of science. (B) Life Science is a subject filled with interesting information. (C) Geology and Oceanography are subjects in Earth Science. (D) Biology is a science that studies complex organisms.	Answer: (B) Life Science is a subject filled with interesting information.	Answer: (D) Biology is a science that studies complex organisms.	Question: Which statement is an opinion? (A) Chemistry and Physics are major branches of science. (B) Life Science is a subject filled with interesting information. (C) Geology and Oceanography are subjects in Earth Science. (D) Biology is a science that studies complex organisms. Answer: (B) Life Science is a subject filled with interesting information.
null	null	null	null	null	null	null	Most birds prey on domestic animals.
null	null	null	null	null	null	null	Some events affect areas.
Mercury_7128275	Nerve cells transmitting messages to the body best demonstrate which primary function?	{ "label": [ "A", "B", "C", "D" ], "text": [ "the transfer of energy", "the exchange of gases", "the elimination of waste", "the absorption of nutrients" ] }	A	Question: Nerve cells transmitting messages to the body best demonstrate which primary function? (A) the transfer of energy (B) the exchange of gases (C) the elimination of waste (D) the absorption of nutrients	Answer: (A) the transfer of energy	Answer: (C) the elimination of waste	Question: Nerve cells transmitting messages to the body best demonstrate which primary function? (A) the transfer of energy (B) the exchange of gases (C) the elimination of waste (D) the absorption of nutrients Answer: (A) the transfer of energy
Mercury_7011095	Which physical property is important to have in a material used in cookware?	{ "label": [ "A", "B", "C", "D" ], "text": [ "poor conductor of heat", "good conductor of heat", "low flexibility", "high flexibility" ] }	B	Question: Which physical property is important to have in a material used in cookware? (A) poor conductor of heat (B) good conductor of heat (C) low flexibility (D) high flexibility	Answer: (B) good conductor of heat	Answer: (A) poor conductor of heat	Question: Which physical property is important to have in a material used in cookware? (A) poor conductor of heat (B) good conductor of heat (C) low flexibility (D) high flexibility Answer: (B) good conductor of heat
null	null	null	null	null	null	null	Some predation theories guide observations.
Mercury_7269080	Which model best illustrates the wave property that enables scientists to explore Earth's interior using seismic waves?	{ "label": [ "A", "B", "C", "D" ], "text": [ "shining a light on rock in a bowl", "shining a light through a prism", "shining a light through a periscope", "shining a light on a sundial" ] }	B	Question: Which model best illustrates the wave property that enables scientists to explore Earth's interior using seismic waves? (A) shining a light on rock in a bowl (B) shining a light through a prism (C) shining a light through a periscope (D) shining a light on a sundial	Answer: (B) shining a light through a prism	Answer: (A) shining a light on rock in a bowl	Question: Which model best illustrates the wave property that enables scientists to explore Earth's interior using seismic waves? (A) shining a light on rock in a bowl (B) shining a light through a prism (C) shining a light through a periscope (D) shining a light on a sundial Answer: (B) shining a light through a prism
null	null	null	null	null	null	null	Some problems are experienced by gardeners.
null	null	null	null	null	null	null	It makes more leaves and stems.
CSZ10336	Peach trees have sweet-smelling blossoms and produce rich fruit. What is the main purpose of the flowers of a peach tree?	{ "label": [ "A", "B", "C", "D" ], "text": [ "to attract bees for pollination", "to create flower arrangements", "to protect the tree from disease", "to feed migratory birds" ] }	A	Question: Peach trees have sweet-smelling blossoms and produce rich fruit. What is the main purpose of the flowers of a peach tree? (A) to attract bees for pollination (B) to create flower arrangements (C) to protect the tree from disease (D) to feed migratory birds	Answer: (A) to attract bees for pollination	Answer: (C) to protect the tree from disease	Question: Peach trees have sweet-smelling blossoms and produce rich fruit. What is the main purpose of the flowers of a peach tree? (A) to attract bees for pollination (B) to create flower arrangements (C) to protect the tree from disease (D) to feed migratory birds Answer: (A) to attract bees for pollination
NYSEDREGENTS_2009_4_19	Since green plants make their own food, they are called	{ "label": [ "A", "B", "C", "D" ], "text": [ "predators", "prey", "decomposers", "producers" ] }	D	Question: Since green plants make their own food, they are called (A) predators (B) prey (C) decomposers (D) producers	Answer: (D) producers	Answer: (B) prey	Question: Since green plants make their own food, they are called (A) predators (B) prey (C) decomposers (D) producers Answer: (D) producers
null	null	null	null	null	null	null	The pattern indicates a living organism is involved, as does the fact that more plants are showing symptoms.
Mercury_7270375	Stem cells are cells that can differentiate into many different kinds of cells. Scientists have discovered that the environment supporting the cells influences stem-cell differentiation. For example, stem cells grown on strong, flexible surfaces became muscle cells. What most likely happened to stem cells grown on a hard, rigid surface?	{ "label": [ "A", "B", "C", "D" ], "text": [ "They became nerve cells.", "They became red blood cells.", "They became bone cells.", "They became skin cells." ] }	C	Question: Stem cells are cells that can differentiate into many different kinds of cells. Scientists have discovered that the environment supporting the cells influences stem-cell differentiation. For example, stem cells grown on strong, flexible surfaces became muscle cells. What most likely happened to stem cells grown on a hard, rigid surface? (A) They became nerve cells. (B) They became red blood cells. (C) They became bone cells. (D) They became skin cells.	Answer: (C) They became bone cells.	Answer: (B) They became red blood cells.	Question: Stem cells are cells that can differentiate into many different kinds of cells. Scientists have discovered that the environment supporting the cells influences stem-cell differentiation. For example, stem cells grown on strong, flexible surfaces became muscle cells. What most likely happened to stem cells grown on a hard, rigid surface? (A) They became nerve cells. (B) They became red blood cells. (C) They became bone cells. (D) They became skin cells. Answer: (C) They became bone cells.
TAKS_2009_5_38	Which of these mixtures would be easiest to separate?	{ "label": [ "A", "B", "C", "D" ], "text": [ "Fruit salad", "Powdered lemonade", "Hot chocolate", "Instant pudding" ] }	A	Question: Which of these mixtures would be easiest to separate? (A) Fruit salad (B) Powdered lemonade (C) Hot chocolate (D) Instant pudding	Answer: (A) Fruit salad	Answer: (D) Instant pudding	Question: Which of these mixtures would be easiest to separate? (A) Fruit salad (B) Powdered lemonade (C) Hot chocolate (D) Instant pudding Answer: (A) Fruit salad
null	null	null	null	null	null	null	Some cones produce trees.
null	null	null	null	null	null	null	Some important mechanisms contribute to excretion.
null	null	null	null	null	null	null	It feeds on earthworms and larvae.
null	null	null	null	null	null	null	Some patterns relate to differentiations.
Mercury_7014858	Sugar is added to water and the mixture is stirred. Which observation is evidence that the sugar dissolved in the water?	{ "label": [ "A", "B", "C", "D" ], "text": [ "Less sugar is visible.", "The water is cloudy.", "The sugar turned into crystals.", "Bubbles formed in the water." ] }	A	Question: Sugar is added to water and the mixture is stirred. Which observation is evidence that the sugar dissolved in the water? (A) Less sugar is visible. (B) The water is cloudy. (C) The sugar turned into crystals. (D) Bubbles formed in the water.	Answer: (A) Less sugar is visible.	Answer: (C) The sugar turned into crystals.	Question: Sugar is added to water and the mixture is stirred. Which observation is evidence that the sugar dissolved in the water? (A) Less sugar is visible. (B) The water is cloudy. (C) The sugar turned into crystals. (D) Bubbles formed in the water. Answer: (A) Less sugar is visible.
TIMSS_2003_8_pg86	The fossils that are found in the oldest layers of sedimentary rock were formed which types of organisms?	{ "label": [ "A", "B", "C", "D" ], "text": [ "only organisms that lived in the sea", "only organisms that lived on land", "only organisms that lived in the air", "organisms that lived on the land, in the sea and in the air" ] }	A	Question: The fossils that are found in the oldest layers of sedimentary rock were formed which types of organisms? (A) only organisms that lived in the sea (B) only organisms that lived on land (C) only organisms that lived in the air (D) organisms that lived on the land, in the sea and in the air	Answer: (A) only organisms that lived in the sea	Answer: (D) organisms that lived on the land, in the sea and in the air	Question: The fossils that are found in the oldest layers of sedimentary rock were formed which types of organisms? (A) only organisms that lived in the sea (B) only organisms that lived on land (C) only organisms that lived in the air (D) organisms that lived on the land, in the sea and in the air Answer: (A) only organisms that lived in the sea
MDSA_2010_8_34	Mammals must eliminate waste products that their bodies produce. Which organ helps mammals eliminate bodily waste?	{ "label": [ "A", "B", "C", "D" ], "text": [ "appendix", "kidney", "pancreas", "stomach" ] }	B	Question: Mammals must eliminate waste products that their bodies produce. Which organ helps mammals eliminate bodily waste? (A) appendix (B) kidney (C) pancreas (D) stomach	Answer: (B) kidney	Answer: (D) stomach	Question: Mammals must eliminate waste products that their bodies produce. Which organ helps mammals eliminate bodily waste? (A) appendix (B) kidney (C) pancreas (D) stomach Answer: (B) kidney
AIMS_2008_4_12	Western coral snakes have a striped color pattern and are poisonous. Arizona mountain king snakes look like western coral snakes but are not poisonous. The color pattern of the Arizona mountain king snake is an example of	{ "label": [ "A", "B", "C", "D" ], "text": [ "camouflage.", "mimicry.", "mutualism.", "parasitism." ] }	B	Question: Western coral snakes have a striped color pattern and are poisonous. Arizona mountain king snakes look like western coral snakes but are not poisonous. The color pattern of the Arizona mountain king snake is an example of (A) camouflage. (B) mimicry. (C) mutualism. (D) parasitism.	Answer: (B) mimicry.	Answer: (C) mutualism.	Question: Western coral snakes have a striped color pattern and are poisonous. Arizona mountain king snakes look like western coral snakes but are not poisonous. The color pattern of the Arizona mountain king snake is an example of (A) camouflage. (B) mimicry. (C) mutualism. (D) parasitism. Answer: (B) mimicry.
Mercury_SC_400527	Most types of cacti survive the dry conditions of a desert because they hold water in their stems. This is an example of	{ "label": [ "A", "B", "C", "D" ], "text": [ "a niche.", "a species.", "an adaptation.", "an ecosystem." ] }	C	Question: Most types of cacti survive the dry conditions of a desert because they hold water in their stems. This is an example of (A) a niche. (B) a species. (C) an adaptation. (D) an ecosystem.	Answer: (C) an adaptation.	Answer: (B) a species.	Question: Most types of cacti survive the dry conditions of a desert because they hold water in their stems. This is an example of (A) a niche. (B) a species. (C) an adaptation. (D) an ecosystem. Answer: (C) an adaptation.
null	null	null	null	null	null	null	The marine mammals have different means of communication than terrestrial mammals.
null	null	null	null	null	null	null	The leaves of these plants look similar to bay leaves.
Mercury_405946	A family installs a new heating system in their home. Which is the most desirable result of the new heating system?	{ "label": [ "A", "B", "C", "D" ], "text": [ "producing more noise pollution", "decreasing the amount of energy used", "increasing the use of natural resources", "increasing the time it takes to heat the home" ] }	B	Question: A family installs a new heating system in their home. Which is the most desirable result of the new heating system? (A) producing more noise pollution (B) decreasing the amount of energy used (C) increasing the use of natural resources (D) increasing the time it takes to heat the home	Answer: (B) decreasing the amount of energy used	Answer: (D) increasing the time it takes to heat the home	Question: A family installs a new heating system in their home. Which is the most desirable result of the new heating system? (A) producing more noise pollution (B) decreasing the amount of energy used (C) increasing the use of natural resources (D) increasing the time it takes to heat the home Answer: (B) decreasing the amount of energy used
null	null	null	null	null	null	null	Mammals evolved from primitive reptiles called Therapsids about 250 million years ago.
Mercury_7210928	Which resource, abundant in Nevada, is nonrenewable?	{ "label": [ "A", "B", "C", "D" ], "text": [ "copper", "wind", "sunlight", "wood" ] }	A	Question: Which resource, abundant in Nevada, is nonrenewable? (A) copper (B) wind (C) sunlight (D) wood	Answer: (A) copper	Answer: (B) wind	Question: Which resource, abundant in Nevada, is nonrenewable? (A) copper (B) wind (C) sunlight (D) wood Answer: (A) copper
null	null	null	null	null	null	null	Most materials have texture.
null	null	null	null	null	null	null	Ova and spermatozooids are sometimes included among the free cells.
null	null	null	null	null	null	null	cells most of the DNA is contained in a
Mercury_SC_400865	What event happens in a daily cycle?	{ "label": [ "A", "B", "C", "D" ], "text": [ "cliffs erode", "rivers flood", "volcanoes erupt", "high and low tides" ] }	D	Question: What event happens in a daily cycle? (A) cliffs erode (B) rivers flood (C) volcanoes erupt (D) high and low tides	Answer: (D) high and low tides	Answer: (A) cliffs erode	Question: What event happens in a daily cycle? (A) cliffs erode (B) rivers flood (C) volcanoes erupt (D) high and low tides Answer: (D) high and low tides
Mercury_7193095	In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change?	{ "label": [ "A", "B", "C", "D" ], "text": [ "increased inorganic matter in soil", "increased use of fertilizers on crops", "increased buildup of greenhouse gases", "increased rainfall rates near power plants" ] }	C	Question: In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change? (A) increased inorganic matter in soil (B) increased use of fertilizers on crops (C) increased buildup of greenhouse gases (D) increased rainfall rates near power plants	Answer: (C) increased buildup of greenhouse gases	Answer: (D) increased rainfall rates near power plants	Question: In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change? (A) increased inorganic matter in soil (B) increased use of fertilizers on crops (C) increased buildup of greenhouse gases (D) increased rainfall rates near power plants Answer: (C) increased buildup of greenhouse gases
null	null	null	null	null	null	null	When the evolution gets change, the amount of the organism will be change by the evolution.
null	null	null	null	null	null	null	Overall, the microbial community fluctuates with the diet of the host – different microbes are required to breakdown different types of plants.
null	null	null	null	null	null	null	If you apply a force to an object, you may change its energy.
MCAS_2007_8_5170	Which of the following identifies the primary function of a radio station tower in a communication system?	{ "label": [ "A", "B", "C", "D" ], "text": [ "decoder", "encoder", "receiver", "transmitter" ] }	D	Question: Which of the following identifies the primary function of a radio station tower in a communication system? (A) decoder (B) encoder (C) receiver (D) transmitter	Answer: (D) transmitter	Answer: (C) receiver	Question: Which of the following identifies the primary function of a radio station tower in a communication system? (A) decoder (B) encoder (C) receiver (D) transmitter Answer: (D) transmitter
Mercury_SC_406660	Some animals, such as squirrels, may bury acorns. Which of the following is most likely to happen to the acorns after they have been buried?	{ "label": [ "A", "B", "C", "D" ], "text": [ "The acorns will be carried away by the wind.", "The acorns will attach to another organism.", "The acorns will have a chance to sprout.", "The acorns will turn into fossils." ] }	C	Question: Some animals, such as squirrels, may bury acorns. Which of the following is most likely to happen to the acorns after they have been buried? (A) The acorns will be carried away by the wind. (B) The acorns will attach to another organism. (C) The acorns will have a chance to sprout. (D) The acorns will turn into fossils.	Answer: (C) The acorns will have a chance to sprout.	Answer: (A) The acorns will be carried away by the wind.	Question: Some animals, such as squirrels, may bury acorns. Which of the following is most likely to happen to the acorns after they have been buried? (A) The acorns will be carried away by the wind. (B) The acorns will attach to another organism. (C) The acorns will have a chance to sprout. (D) The acorns will turn into fossils. Answer: (C) The acorns will have a chance to sprout.
null	null	null	null	null	null	null	Close ecological relationship between two or more organisms of different species that live in direct contact with one another
Mercury_7007805	Which biological activity occurs in a repeated rhythm?	{ "label": [ "A", "B", "C", "D" ], "text": [ "sneezing", "coughing", "breathing", "blinking" ] }	C	Question: Which biological activity occurs in a repeated rhythm? (A) sneezing (B) coughing (C) breathing (D) blinking	Answer: (C) breathing	Answer: (A) sneezing	Question: Which biological activity occurs in a repeated rhythm? (A) sneezing (B) coughing (C) breathing (D) blinking Answer: (C) breathing
null	null	null	null	null	null	null	Consumers obtain energy by eating other organisms.
null	null	null	null	null	null	null	Small amounts of water evaporates from rivers, streams, and lakes and joins that water vapor.
null	null	null	null	null	null	null	Some mutants exhibit same phenotypes.
VASoL_2008_3_24	While a sailor was out fishing, he got lost at sea. Which object would help him direct the boat back to shore?	{ "label": [ "A", "B", "C", "D" ], "text": [ "Rope", "Magnetic compass", "Blanket", "Measuring tape" ] }	B	Question: While a sailor was out fishing, he got lost at sea. Which object would help him direct the boat back to shore? (A) Rope (B) Magnetic compass (C) Blanket (D) Measuring tape	Answer: (B) Magnetic compass	Answer: (D) Measuring tape	Question: While a sailor was out fishing, he got lost at sea. Which object would help him direct the boat back to shore? (A) Rope (B) Magnetic compass (C) Blanket (D) Measuring tape Answer: (B) Magnetic compass
null	null	null	null	null	null	null	A teaspoonful is used to a gallon of water.
VASoL_2010_5_31	Which item is designed to change electrical energy into heat energy?	{ "label": [ "A", "B", "C", "D" ], "text": [ "Alarm clock", "Hand dryer", "Fan", "Telephone" ] }	B	Question: Which item is designed to change electrical energy into heat energy? (A) Alarm clock (B) Hand dryer (C) Fan (D) Telephone	Answer: (B) Hand dryer	Answer: (C) Fan	Question: Which item is designed to change electrical energy into heat energy? (A) Alarm clock (B) Hand dryer (C) Fan (D) Telephone Answer: (B) Hand dryer
AKDE&ED_2008_4_45	From Earth, the Sun appears brighter than any other star because the Sun is the	{ "label": [ "A", "B", "C", "D" ], "text": [ "newest star.", "largest star.", "hottest star.", "closest star." ] }	D	Question: From Earth, the Sun appears brighter than any other star because the Sun is the (A) newest star. (B) largest star. (C) hottest star. (D) closest star.	Answer: (D) closest star.	Answer: (A) newest star.	Question: From Earth, the Sun appears brighter than any other star because the Sun is the (A) newest star. (B) largest star. (C) hottest star. (D) closest star. Answer: (D) closest star.
NYSEDREGENTS_2006_4_3	Sleet and hail are forms of	{ "label": [ "A", "B", "C", "D" ], "text": [ "clouds", "energy", "evaporation", "precipitation" ] }	D	Question: Sleet and hail are forms of (A) clouds (B) energy (C) evaporation (D) precipitation	Answer: (D) precipitation	Answer: (B) energy	Question: Sleet and hail are forms of (A) clouds (B) energy (C) evaporation (D) precipitation Answer: (D) precipitation
null	null	null	null	null	null	null	Therefore, any factor reducing the abundance or availability of sandeels is likely to have a negative effect and lead to population declines.
null	null	null	null	null	null	null	Most plants need moisture.
Mercury_7191590	Jake is testing how light affects plant growth. He grows two plants in identical pots with the same amount of water and fertilizer. Jake grows one of the plants in the sun, and the other in the shade. Which part of Jake's process indicates that there is a control for this investigation?	{ "label": [ "A", "B", "C", "D" ], "text": [ "He is growing plants in identical pots.", "He is using the same amount of water.", "He is growing one plant out of the sun.", "He is using the same amount of fertilizer." ] }	C	Question: Jake is testing how light affects plant growth. He grows two plants in identical pots with the same amount of water and fertilizer. Jake grows one of the plants in the sun, and the other in the shade. Which part of Jake's process indicates that there is a control for this investigation? (A) He is growing plants in identical pots. (B) He is using the same amount of water. (C) He is growing one plant out of the sun. (D) He is using the same amount of fertilizer.	Answer: (C) He is growing one plant out of the sun.	Answer: (B) He is using the same amount of water.	Question: Jake is testing how light affects plant growth. He grows two plants in identical pots with the same amount of water and fertilizer. Jake grows one of the plants in the sun, and the other in the shade. Which part of Jake's process indicates that there is a control for this investigation? (A) He is growing plants in identical pots. (B) He is using the same amount of water. (C) He is growing one plant out of the sun. (D) He is using the same amount of fertilizer. Answer: (C) He is growing one plant out of the sun.
null	null	null	null	null	null	null	Question: What animal is described as having powers of concentration bent on serving its master? (A) cat (B) dog (C) horse (D) parrot Answer: (B) dog
NYSEDREGENTS_2006_8_3	In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere?	{ "label": [ "1", "2", "3", "4" ], "text": [ "hydrogen, helium, and water vapor", "hydrogen, methane, and ozone", "carbon dioxide, water vapor, and nitrogen", "carbon dioxide, methane, and helium" ] }	3	Question: In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere? (1) hydrogen, helium, and water vapor (2) hydrogen, methane, and ozone (3) carbon dioxide, water vapor, and nitrogen (4) carbon dioxide, methane, and helium	Answer: (3) carbon dioxide, water vapor, and nitrogen	Answer: (4) carbon dioxide, methane, and helium	Question: In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere? (1) hydrogen, helium, and water vapor (2) hydrogen, methane, and ozone (3) carbon dioxide, water vapor, and nitrogen (4) carbon dioxide, methane, and helium Answer: (3) carbon dioxide, water vapor, and nitrogen
null	null	null	null	null	null	null	[21] Fights establish dominance relationships among males, and determine who gets access to estrous females.
null	null	null	null	null	null	null	Some spheres fill with water.
VASoL_2010_5_1	Which of these human activities most relies on high-quality soil?	{ "label": [ "A", "B", "C", "D" ], "text": [ "Hiking", "Hunting", "Coal mining", "Growing crops" ] }	D	Question: Which of these human activities most relies on high-quality soil? (A) Hiking (B) Hunting (C) Coal mining (D) Growing crops	Answer: (D) Growing crops	Answer: (C) Coal mining	Question: Which of these human activities most relies on high-quality soil? (A) Hiking (B) Hunting (C) Coal mining (D) Growing crops Answer: (D) Growing crops
Mercury_7085348	Which of these provides the best evidence that the environment of Earth has changed over millions of years?	{ "label": [ "A", "B", "C", "D" ], "text": [ "active migration of sand dunes", "polished appearance of rock surfaces", "marine fossils found in mountains", "bones of animals found on the ground" ] }	C	Question: Which of these provides the best evidence that the environment of Earth has changed over millions of years? (A) active migration of sand dunes (B) polished appearance of rock surfaces (C) marine fossils found in mountains (D) bones of animals found on the ground	Answer: (C) marine fossils found in mountains	Answer: (A) active migration of sand dunes	Question: Which of these provides the best evidence that the environment of Earth has changed over millions of years? (A) active migration of sand dunes (B) polished appearance of rock surfaces (C) marine fossils found in mountains (D) bones of animals found on the ground Answer: (C) marine fossils found in mountains
null	null	null	null	null	null	null	Question: What was the name of the parliament of the Weimar Republic? (A) Reichstag (B) Bundestag (C) Landtag (D) Storting Answer: (A) Reichstag
null	null	null	null	null	null	null	Most diets include grain.
null	null	null	null	null	null	null	In meiosis one the prophase, metaphase, anaphase and telophase will divide the cell into two and separate the homologous pairs.
null	null	null	null	null	null	null	Second, females occasionally seem to respond to the sexual swellings of others by swelling themselves.
Mercury_7222968	In 2004 the Hubble space telescope captured images of distant star clusters, each containing about a million stars. These star clusters were most likely part of which structure?	{ "label": [ "A", "B", "C", "D" ], "text": [ "a black hole", "a galaxy", "a nebula", "a solar system" ] }	B	Question: In 2004 the Hubble space telescope captured images of distant star clusters, each containing about a million stars. These star clusters were most likely part of which structure? (A) a black hole (B) a galaxy (C) a nebula (D) a solar system	Answer: (B) a galaxy	Answer: (D) a solar system	Question: In 2004 the Hubble space telescope captured images of distant star clusters, each containing about a million stars. These star clusters were most likely part of which structure? (A) a black hole (B) a galaxy (C) a nebula (D) a solar system Answer: (B) a galaxy
Mercury_7133665	Which action illustrates a chemical change?	{ "label": [ "A", "B", "C", "D" ], "text": [ "painting a wood chest", "sawing a wood plank", "burning wood chips", "cutting down a tree" ] }	C	Question: Which action illustrates a chemical change? (A) painting a wood chest (B) sawing a wood plank (C) burning wood chips (D) cutting down a tree	Answer: (C) burning wood chips	Answer: (A) painting a wood chest	Question: Which action illustrates a chemical change? (A) painting a wood chest (B) sawing a wood plank (C) burning wood chips (D) cutting down a tree Answer: (C) burning wood chips
null	null	null	null	null	null	null	Question: In which time period does the entry begin? (A) 1700's (B) 1900's (C) 2000's (D) 1800's Answer: (D) 1800's
null	null	null	null	null	null	null	In some few cases, however, plants have become habituated to new conditions.
null	null	null	null	null	null	null	a symbiotic relationship between two organisms of different species in which one derives some benefit while the other is unaffected.
ACTAAP_2008_7_14	An Italian scientist named Alessandro Volta invented the Voltaic pile in 1800. It was able to produce a steady electrical current. Based on this description, what is the modern equivalent of the Voltaic pile?	{ "label": [ "A", "B", "C", "D" ], "text": [ "a wire", "a battery", "a resistor", "a light bulb" ] }	B	Question: An Italian scientist named Alessandro Volta invented the Voltaic pile in 1800. It was able to produce a steady electrical current. Based on this description, what is the modern equivalent of the Voltaic pile? (A) a wire (B) a battery (C) a resistor (D) a light bulb	Answer: (B) a battery	Answer: (A) a wire	Question: An Italian scientist named Alessandro Volta invented the Voltaic pile in 1800. It was able to produce a steady electrical current. Based on this description, what is the modern equivalent of the Voltaic pile? (A) a wire (B) a battery (C) a resistor (D) a light bulb Answer: (B) a battery
MCAS_2003_8_30	The surface gravity of Pluto is the weakest of the nine planets because Pluto	{ "label": [ "A", "B", "C", "D" ], "text": [ "has the lowest temperature.", "has the smallest mass.", "rotates the slowest.", "is farthest from the Sun." ] }	B	Question: The surface gravity of Pluto is the weakest of the nine planets because Pluto (A) has the lowest temperature. (B) has the smallest mass. (C) rotates the slowest. (D) is farthest from the Sun.	Answer: (B) has the smallest mass.	Answer: (A) has the lowest temperature.	Question: The surface gravity of Pluto is the weakest of the nine planets because Pluto (A) has the lowest temperature. (B) has the smallest mass. (C) rotates the slowest. (D) is farthest from the Sun. Answer: (B) has the smallest mass.

null

The homologous chromosome pairs separate, but the individual chromosomes, each consisting of two sister chromatids, remain intact.

Mercury_7009485

An atom will always have

{ "label": [ "A", "B", "C", "D" ], "text": [ "a single, negatively-charged nucleus.", "equal numbers of protons and electrons.", "\"shared\" electrons from another atom.", "a stable number of charged neutrons." ] }

B

Question: An atom will always have (A) a single, negatively-charged nucleus. (B) equal numbers of protons and electrons. (C) "shared" electrons from another atom. (D) a stable number of charged neutrons.

Answer: (B) equal numbers of protons and electrons.

Answer: (C) "shared" electrons from another atom.

Question: An atom will always have (A) a single, negatively-charged nucleus. (B) equal numbers of protons and electrons. (C) "shared" electrons from another atom. (D) a stable number of charged neutrons. Answer: (B) equal numbers of protons and electrons.

null

The decrease in the number of amphibians is an indicator of how gravely affected the ecosystem is.

null

Question: Algae oil is more concentrated in which essential nutrients? (A) vitamin C and iron (B) omega-3s and DHA (C) calcium and vitamin D (D) carbohydrates and proteins Answer: (B) omega-3s and DHA

null

The freshly created primary spermatocytes (I) now enter into the first meiosis.

null

For this reason the plants that live in these soils have evolved into carnivorous plants that capture and digest insects as a means of obtaining nitrates.

null

The leaves may be spirally arranged or grouped in four vertical rows along the shoot.

null

Most peccaries reach sexual maturity.

null

Their dietary needs are fulfilled with both dry food and wet food.

Mercury_7041020

Which organisms form the base of all ecosystems?

{ "label": [ "A", "B", "C", "D" ], "text": [ "scavengers", "producers", "consumers", "decomposers" ] }

B

Question: Which organisms form the base of all ecosystems? (A) scavengers (B) producers (C) consumers (D) decomposers

Answer: (B) producers

Answer: (A) scavengers

Question: Which organisms form the base of all ecosystems? (A) scavengers (B) producers (C) consumers (D) decomposers Answer: (B) producers

Mercury_7030048

If a student gets a chemical splashed into an eye, what is the most appropriate first action to be taken?

{ "label": [ "A", "B", "C", "D" ], "text": [ "wipe it with a paper towel", "call 911 for emergency services", "have someone go get the school nurse", "flush the eye with water at an eyewash station" ] }

D

Question: If a student gets a chemical splashed into an eye, what is the most appropriate first action to be taken? (A) wipe it with a paper towel (B) call 911 for emergency services (C) have someone go get the school nurse (D) flush the eye with water at an eyewash station

Answer: (D) flush the eye with water at an eyewash station

Answer: (C) have someone go get the school nurse

Question: If a student gets a chemical splashed into an eye, what is the most appropriate first action to be taken? (A) wipe it with a paper towel (B) call 911 for emergency services (C) have someone go get the school nurse (D) flush the eye with water at an eyewash station Answer: (D) flush the eye with water at an eyewash station

null

in angiosperms, seeds develop in the

null

eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass.

Mercury_SC_415368

A dragonfly develops through incomplete metamorphosis. Which stages does the dragonfly's life cycle include?

{ "label": [ "A", "B", "C", "D" ], "text": [ "egg and larva", "egg and nymph", "larva and pupa", "larva and nymph" ] }

B

Question: A dragonfly develops through incomplete metamorphosis. Which stages does the dragonfly's life cycle include? (A) egg and larva (B) egg and nymph (C) larva and pupa (D) larva and nymph

Answer: (B) egg and nymph

Answer: (D) larva and nymph

Question: A dragonfly develops through incomplete metamorphosis. Which stages does the dragonfly's life cycle include? (A) egg and larva (B) egg and nymph (C) larva and pupa (D) larva and nymph Answer: (B) egg and nymph

Mercury_7044118

What will be the most likely result for some species of animals with the continued burning of rain forests in Africa?

{ "label": [ "A", "B", "C", "D" ], "text": [ "soil erosion", "destruction of their habitats", "improved nutrients in the soil", "more grasses as a result of burning" ] }

B

Question: What will be the most likely result for some species of animals with the continued burning of rain forests in Africa? (A) soil erosion (B) destruction of their habitats (C) improved nutrients in the soil (D) more grasses as a result of burning

Answer: (B) destruction of their habitats

Answer: (D) more grasses as a result of burning

Question: What will be the most likely result for some species of animals with the continued burning of rain forests in Africa? (A) soil erosion (B) destruction of their habitats (C) improved nutrients in the soil (D) more grasses as a result of burning Answer: (B) destruction of their habitats

null

It is noteworthy that such local adaptation appears to have occurred in this population in spite of its small size, low genetic variation and high genetic load [ 3 ].

null

Question: What is being suggested? (A) A new litter box (B) A new brand of cat food (C) A new toy for cats (D) A new cat bed Answer: (A) A new litter box

null

The pulmonary artery carries blood containing carbon dioxide to the air sacs, where the gas moves from the blood to the air, according to the NHLBI.

Mercury_SC_413305

How does ice change the shape of rocks?

{ "label": [ "A", "B", "C", "D" ], "text": [ "It dissolves the rocks by pooling on surfaces.", "It breaks the rocks by expanding in openings.", "It smooths the rocks by colliding with them.", "It moves the rocks by pressing on them." ] }

B

Question: How does ice change the shape of rocks? (A) It dissolves the rocks by pooling on surfaces. (B) It breaks the rocks by expanding in openings. (C) It smooths the rocks by colliding with them. (D) It moves the rocks by pressing on them.

Answer: (B) It breaks the rocks by expanding in openings.

Answer: (C) It smooths the rocks by colliding with them.

Question: How does ice change the shape of rocks? (A) It dissolves the rocks by pooling on surfaces. (B) It breaks the rocks by expanding in openings. (C) It smooths the rocks by colliding with them. (D) It moves the rocks by pressing on them. Answer: (B) It breaks the rocks by expanding in openings.

null

Question: What qualities does the speaker appreciate about the mentioned item? (A) strong and rigid (B) soft and fluffy (C) stretchy and breathable (D) smooth and shiny Answer: (C) stretchy and breathable

NCEOGA_2013_5_31

Which best describes a characteristic of the jet stream?

{ "label": [ "A", "B", "C", "D" ], "text": [ "It forms a boundary between a cold air mass and a warm air mass.", "It creates the high winds around the eye of a hurricane.", "It forces the hot air along the equator to rise to areas in North America.", "It causes high pressure air masses to rotate clockwise." ] }

A

Question: Which best describes a characteristic of the jet stream? (A) It forms a boundary between a cold air mass and a warm air mass. (B) It creates the high winds around the eye of a hurricane. (C) It forces the hot air along the equator to rise to areas in North America. (D) It causes high pressure air masses to rotate clockwise.

Answer: (A) It forms a boundary between a cold air mass and a warm air mass.

Answer: (B) It creates the high winds around the eye of a hurricane.

Question: Which best describes a characteristic of the jet stream? (A) It forms a boundary between a cold air mass and a warm air mass. (B) It creates the high winds around the eye of a hurricane. (C) It forces the hot air along the equator to rise to areas in North America. (D) It causes high pressure air masses to rotate clockwise. Answer: (A) It forms a boundary between a cold air mass and a warm air mass.

Mercury_7108115

Rich beds of marine fossils have been found in Florida. By dating these fossils, scientists can best determine

{ "label": [ "A", "B", "C", "D" ], "text": [ "when Florida collided with the North American continent.", "the date when organisms moved onto dry land.", "the period during which Florida was covered in water.", "when the atmosphere of Earth was more humid than it is today." ] }

C

Question: Rich beds of marine fossils have been found in Florida. By dating these fossils, scientists can best determine (A) when Florida collided with the North American continent. (B) the date when organisms moved onto dry land. (C) the period during which Florida was covered in water. (D) when the atmosphere of Earth was more humid than it is today.

Answer: (C) the period during which Florida was covered in water.

Answer: (A) when Florida collided with the North American continent.

Question: Rich beds of marine fossils have been found in Florida. By dating these fossils, scientists can best determine (A) when Florida collided with the North American continent. (B) the date when organisms moved onto dry land. (C) the period during which Florida was covered in water. (D) when the atmosphere of Earth was more humid than it is today. Answer: (C) the period during which Florida was covered in water.

null

There are a number of differences, most notably in how the embryo develops.

VASoL_2007_3_22

Barry collected four different rocks. The rock with the GREATEST mass will feel the ___.

{ "label": [ "A", "B", "C", "D" ], "text": [ "heaviest", "smoothest", "sharpest", "hardest" ] }

A

Question: Barry collected four different rocks. The rock with the GREATEST mass will feel the ___. (A) heaviest (B) smoothest (C) sharpest (D) hardest

Answer: (A) heaviest

Answer: (D) hardest

Question: Barry collected four different rocks. The rock with the GREATEST mass will feel the ___. (A) heaviest (B) smoothest (C) sharpest (D) hardest Answer: (A) heaviest

null

Those traits that the environment can change.

null

Most products are produced by activities.

NCEOGA_2013_5_12

Which is an example of a single-celled organism?

{ "label": [ "A", "B", "C", "D" ], "text": [ "amoeba", "insect", "fish", "worm" ] }

A

Question: Which is an example of a single-celled organism? (A) amoeba (B) insect (C) fish (D) worm

Answer: (A) amoeba

Answer: (D) worm

Question: Which is an example of a single-celled organism? (A) amoeba (B) insect (C) fish (D) worm Answer: (A) amoeba

NYSEDREGENTS_2005_4_1

Which example describes an organism taking in nutrients?

{ "label": [ "A", "B", "C", "D" ], "text": [ "a dog burying a bone", "a girl eating an apple", "an insect crawling on a leaf", "a boy planting tomatoes in a garden" ] }

B

Question: Which example describes an organism taking in nutrients? (A) a dog burying a bone (B) a girl eating an apple (C) an insect crawling on a leaf (D) a boy planting tomatoes in a garden

Answer: (B) a girl eating an apple

Answer: (D) a boy planting tomatoes in a garden

Question: Which example describes an organism taking in nutrients? (A) a dog burying a bone (B) a girl eating an apple (C) an insect crawling on a leaf (D) a boy planting tomatoes in a garden Answer: (B) a girl eating an apple

Mercury_7183435

Living organisms require energy for biological processes. Chemical energy in a plant cell is

{ "label": [ "A", "B", "C", "D" ], "text": [ "produced in vacuoles.", "converted from solar energy.", "developed by centrioles.", "stored as kinetic energy." ] }

B

Question: Living organisms require energy for biological processes. Chemical energy in a plant cell is (A) produced in vacuoles. (B) converted from solar energy. (C) developed by centrioles. (D) stored as kinetic energy.

Answer: (B) converted from solar energy.

Answer: (A) produced in vacuoles.

Question: Living organisms require energy for biological processes. Chemical energy in a plant cell is (A) produced in vacuoles. (B) converted from solar energy. (C) developed by centrioles. (D) stored as kinetic energy. Answer: (B) converted from solar energy.

NYSEDREGENTS_2004_8_1

The items listed below were found in a science classroom. * a heart made of plastic with many of its parts labeled * clay formed to look like Earth and other planets * a giant plastic plant cell with removable cell parts These items are all examples of

{ "label": [ "1", "2", "3", "4" ], "text": [ "models", "experiments", "variables", "controls" ] }

1

Question: The items listed below were found in a science classroom. * a heart made of plastic with many of its parts labeled * clay formed to look like Earth and other planets * a giant plastic plant cell with removable cell parts These items are all examples of (1) models (2) experiments (3) variables (4) controls

Answer: (1) models

Answer: (3) variables

Question: The items listed below were found in a science classroom. * a heart made of plastic with many of its parts labeled * clay formed to look like Earth and other planets * a giant plastic plant cell with removable cell parts These items are all examples of (1) models (2) experiments (3) variables (4) controls Answer: (1) models

null

The lines on a phylogeny that trace the pathway of evolutionary lineages through time.

null

Question: What started to occur regularly from Perboewatan beginning May 20, 1883? (A) lava flow (B) steam venting (C) rock slides (D) volcanic ash Answer: (B) steam venting

Mercury_7068793

Which statement is an opinion?

{ "label": [ "A", "B", "C", "D" ], "text": [ "Chemistry and Physics are major branches of science.", "Life Science is a subject filled with interesting information.", "Geology and Oceanography are subjects in Earth Science.", "Biology is a science that studies complex organisms." ] }

B

Question: Which statement is an opinion? (A) Chemistry and Physics are major branches of science. (B) Life Science is a subject filled with interesting information. (C) Geology and Oceanography are subjects in Earth Science. (D) Biology is a science that studies complex organisms.

Answer: (B) Life Science is a subject filled with interesting information.

Answer: (D) Biology is a science that studies complex organisms.

Question: Which statement is an opinion? (A) Chemistry and Physics are major branches of science. (B) Life Science is a subject filled with interesting information. (C) Geology and Oceanography are subjects in Earth Science. (D) Biology is a science that studies complex organisms. Answer: (B) Life Science is a subject filled with interesting information.

null

Most birds prey on domestic animals.

null

Some events affect areas.

Mercury_7128275

Nerve cells transmitting messages to the body best demonstrate which primary function?

{ "label": [ "A", "B", "C", "D" ], "text": [ "the transfer of energy", "the exchange of gases", "the elimination of waste", "the absorption of nutrients" ] }

A

Question: Nerve cells transmitting messages to the body best demonstrate which primary function? (A) the transfer of energy (B) the exchange of gases (C) the elimination of waste (D) the absorption of nutrients

Answer: (A) the transfer of energy

Answer: (C) the elimination of waste

Question: Nerve cells transmitting messages to the body best demonstrate which primary function? (A) the transfer of energy (B) the exchange of gases (C) the elimination of waste (D) the absorption of nutrients Answer: (A) the transfer of energy

Mercury_7011095

Which physical property is important to have in a material used in cookware?

{ "label": [ "A", "B", "C", "D" ], "text": [ "poor conductor of heat", "good conductor of heat", "low flexibility", "high flexibility" ] }

B

Question: Which physical property is important to have in a material used in cookware? (A) poor conductor of heat (B) good conductor of heat (C) low flexibility (D) high flexibility

Answer: (B) good conductor of heat

Answer: (A) poor conductor of heat

Question: Which physical property is important to have in a material used in cookware? (A) poor conductor of heat (B) good conductor of heat (C) low flexibility (D) high flexibility Answer: (B) good conductor of heat

null

Some predation theories guide observations.

Mercury_7269080

Which model best illustrates the wave property that enables scientists to explore Earth's interior using seismic waves?

{ "label": [ "A", "B", "C", "D" ], "text": [ "shining a light on rock in a bowl", "shining a light through a prism", "shining a light through a periscope", "shining a light on a sundial" ] }

B

Question: Which model best illustrates the wave property that enables scientists to explore Earth's interior using seismic waves? (A) shining a light on rock in a bowl (B) shining a light through a prism (C) shining a light through a periscope (D) shining a light on a sundial

Answer: (B) shining a light through a prism

Answer: (A) shining a light on rock in a bowl

Question: Which model best illustrates the wave property that enables scientists to explore Earth's interior using seismic waves? (A) shining a light on rock in a bowl (B) shining a light through a prism (C) shining a light through a periscope (D) shining a light on a sundial Answer: (B) shining a light through a prism

null

Some problems are experienced by gardeners.

null

It makes more leaves and stems.

CSZ10336

Peach trees have sweet-smelling blossoms and produce rich fruit. What is the main purpose of the flowers of a peach tree?

{ "label": [ "A", "B", "C", "D" ], "text": [ "to attract bees for pollination", "to create flower arrangements", "to protect the tree from disease", "to feed migratory birds" ] }

A

Question: Peach trees have sweet-smelling blossoms and produce rich fruit. What is the main purpose of the flowers of a peach tree? (A) to attract bees for pollination (B) to create flower arrangements (C) to protect the tree from disease (D) to feed migratory birds

Answer: (A) to attract bees for pollination

Answer: (C) to protect the tree from disease

Question: Peach trees have sweet-smelling blossoms and produce rich fruit. What is the main purpose of the flowers of a peach tree? (A) to attract bees for pollination (B) to create flower arrangements (C) to protect the tree from disease (D) to feed migratory birds Answer: (A) to attract bees for pollination

NYSEDREGENTS_2009_4_19

Since green plants make their own food, they are called

{ "label": [ "A", "B", "C", "D" ], "text": [ "predators", "prey", "decomposers", "producers" ] }

D

Question: Since green plants make their own food, they are called (A) predators (B) prey (C) decomposers (D) producers

Answer: (D) producers

Answer: (B) prey

Question: Since green plants make their own food, they are called (A) predators (B) prey (C) decomposers (D) producers Answer: (D) producers

null

The pattern indicates a living organism is involved, as does the fact that more plants are showing symptoms.

Mercury_7270375

Stem cells are cells that can differentiate into many different kinds of cells. Scientists have discovered that the environment supporting the cells influences stem-cell differentiation. For example, stem cells grown on strong, flexible surfaces became muscle cells. What most likely happened to stem cells grown on a hard, rigid surface?

{ "label": [ "A", "B", "C", "D" ], "text": [ "They became nerve cells.", "They became red blood cells.", "They became bone cells.", "They became skin cells." ] }

C

Question: Stem cells are cells that can differentiate into many different kinds of cells. Scientists have discovered that the environment supporting the cells influences stem-cell differentiation. For example, stem cells grown on strong, flexible surfaces became muscle cells. What most likely happened to stem cells grown on a hard, rigid surface? (A) They became nerve cells. (B) They became red blood cells. (C) They became bone cells. (D) They became skin cells.

Answer: (C) They became bone cells.

Answer: (B) They became red blood cells.

Question: Stem cells are cells that can differentiate into many different kinds of cells. Scientists have discovered that the environment supporting the cells influences stem-cell differentiation. For example, stem cells grown on strong, flexible surfaces became muscle cells. What most likely happened to stem cells grown on a hard, rigid surface? (A) They became nerve cells. (B) They became red blood cells. (C) They became bone cells. (D) They became skin cells. Answer: (C) They became bone cells.

TAKS_2009_5_38

Which of these mixtures would be easiest to separate?

{ "label": [ "A", "B", "C", "D" ], "text": [ "Fruit salad", "Powdered lemonade", "Hot chocolate", "Instant pudding" ] }

A

Question: Which of these mixtures would be easiest to separate? (A) Fruit salad (B) Powdered lemonade (C) Hot chocolate (D) Instant pudding

Answer: (A) Fruit salad

Answer: (D) Instant pudding

Question: Which of these mixtures would be easiest to separate? (A) Fruit salad (B) Powdered lemonade (C) Hot chocolate (D) Instant pudding Answer: (A) Fruit salad

null

Some cones produce trees.

null

Some important mechanisms contribute to excretion.

null

It feeds on earthworms and larvae.

null

Some patterns relate to differentiations.

Mercury_7014858

Sugar is added to water and the mixture is stirred. Which observation is evidence that the sugar dissolved in the water?

{ "label": [ "A", "B", "C", "D" ], "text": [ "Less sugar is visible.", "The water is cloudy.", "The sugar turned into crystals.", "Bubbles formed in the water." ] }

A

Question: Sugar is added to water and the mixture is stirred. Which observation is evidence that the sugar dissolved in the water? (A) Less sugar is visible. (B) The water is cloudy. (C) The sugar turned into crystals. (D) Bubbles formed in the water.

Answer: (A) Less sugar is visible.

Answer: (C) The sugar turned into crystals.

Question: Sugar is added to water and the mixture is stirred. Which observation is evidence that the sugar dissolved in the water? (A) Less sugar is visible. (B) The water is cloudy. (C) The sugar turned into crystals. (D) Bubbles formed in the water. Answer: (A) Less sugar is visible.

TIMSS_2003_8_pg86

The fossils that are found in the oldest layers of sedimentary rock were formed which types of organisms?

{ "label": [ "A", "B", "C", "D" ], "text": [ "only organisms that lived in the sea", "only organisms that lived on land", "only organisms that lived in the air", "organisms that lived on the land, in the sea and in the air" ] }

A

Question: The fossils that are found in the oldest layers of sedimentary rock were formed which types of organisms? (A) only organisms that lived in the sea (B) only organisms that lived on land (C) only organisms that lived in the air (D) organisms that lived on the land, in the sea and in the air

Answer: (A) only organisms that lived in the sea

Answer: (D) organisms that lived on the land, in the sea and in the air

Question: The fossils that are found in the oldest layers of sedimentary rock were formed which types of organisms? (A) only organisms that lived in the sea (B) only organisms that lived on land (C) only organisms that lived in the air (D) organisms that lived on the land, in the sea and in the air Answer: (A) only organisms that lived in the sea

MDSA_2010_8_34

Mammals must eliminate waste products that their bodies produce. Which organ helps mammals eliminate bodily waste?

{ "label": [ "A", "B", "C", "D" ], "text": [ "appendix", "kidney", "pancreas", "stomach" ] }

B

Question: Mammals must eliminate waste products that their bodies produce. Which organ helps mammals eliminate bodily waste? (A) appendix (B) kidney (C) pancreas (D) stomach

Answer: (B) kidney

Answer: (D) stomach

Question: Mammals must eliminate waste products that their bodies produce. Which organ helps mammals eliminate bodily waste? (A) appendix (B) kidney (C) pancreas (D) stomach Answer: (B) kidney

AIMS_2008_4_12

Western coral snakes have a striped color pattern and are poisonous. Arizona mountain king snakes look like western coral snakes but are not poisonous. The color pattern of the Arizona mountain king snake is an example of

{ "label": [ "A", "B", "C", "D" ], "text": [ "camouflage.", "mimicry.", "mutualism.", "parasitism." ] }

B

Question: Western coral snakes have a striped color pattern and are poisonous. Arizona mountain king snakes look like western coral snakes but are not poisonous. The color pattern of the Arizona mountain king snake is an example of (A) camouflage. (B) mimicry. (C) mutualism. (D) parasitism.

Answer: (B) mimicry.

Answer: (C) mutualism.

Question: Western coral snakes have a striped color pattern and are poisonous. Arizona mountain king snakes look like western coral snakes but are not poisonous. The color pattern of the Arizona mountain king snake is an example of (A) camouflage. (B) mimicry. (C) mutualism. (D) parasitism. Answer: (B) mimicry.

Mercury_SC_400527

Most types of cacti survive the dry conditions of a desert because they hold water in their stems. This is an example of

{ "label": [ "A", "B", "C", "D" ], "text": [ "a niche.", "a species.", "an adaptation.", "an ecosystem." ] }

C

Question: Most types of cacti survive the dry conditions of a desert because they hold water in their stems. This is an example of (A) a niche. (B) a species. (C) an adaptation. (D) an ecosystem.

Answer: (C) an adaptation.

Answer: (B) a species.

Question: Most types of cacti survive the dry conditions of a desert because they hold water in their stems. This is an example of (A) a niche. (B) a species. (C) an adaptation. (D) an ecosystem. Answer: (C) an adaptation.

null

The marine mammals have different means of communication than terrestrial mammals.

null

The leaves of these plants look similar to bay leaves.

Mercury_405946

A family installs a new heating system in their home. Which is the most desirable result of the new heating system?

{ "label": [ "A", "B", "C", "D" ], "text": [ "producing more noise pollution", "decreasing the amount of energy used", "increasing the use of natural resources", "increasing the time it takes to heat the home" ] }

B

Question: A family installs a new heating system in their home. Which is the most desirable result of the new heating system? (A) producing more noise pollution (B) decreasing the amount of energy used (C) increasing the use of natural resources (D) increasing the time it takes to heat the home

Answer: (B) decreasing the amount of energy used

Answer: (D) increasing the time it takes to heat the home

Question: A family installs a new heating system in their home. Which is the most desirable result of the new heating system? (A) producing more noise pollution (B) decreasing the amount of energy used (C) increasing the use of natural resources (D) increasing the time it takes to heat the home Answer: (B) decreasing the amount of energy used

null

Mammals evolved from primitive reptiles called Therapsids about 250 million years ago.

Mercury_7210928

Which resource, abundant in Nevada, is nonrenewable?

{ "label": [ "A", "B", "C", "D" ], "text": [ "copper", "wind", "sunlight", "wood" ] }

A

Question: Which resource, abundant in Nevada, is nonrenewable? (A) copper (B) wind (C) sunlight (D) wood

Answer: (A) copper

Answer: (B) wind

Question: Which resource, abundant in Nevada, is nonrenewable? (A) copper (B) wind (C) sunlight (D) wood Answer: (A) copper

null

Most materials have texture.

null

Ova and spermatozooids are sometimes included among the free cells.

null

cells most of the DNA is contained in a

Mercury_SC_400865

What event happens in a daily cycle?

{ "label": [ "A", "B", "C", "D" ], "text": [ "cliffs erode", "rivers flood", "volcanoes erupt", "high and low tides" ] }

D

Question: What event happens in a daily cycle? (A) cliffs erode (B) rivers flood (C) volcanoes erupt (D) high and low tides

Answer: (D) high and low tides

Answer: (A) cliffs erode

Question: What event happens in a daily cycle? (A) cliffs erode (B) rivers flood (C) volcanoes erupt (D) high and low tides Answer: (D) high and low tides

Mercury_7193095

In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change?

{ "label": [ "A", "B", "C", "D" ], "text": [ "increased inorganic matter in soil", "increased use of fertilizers on crops", "increased buildup of greenhouse gases", "increased rainfall rates near power plants" ] }

C

Question: In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change? (A) increased inorganic matter in soil (B) increased use of fertilizers on crops (C) increased buildup of greenhouse gases (D) increased rainfall rates near power plants

Answer: (C) increased buildup of greenhouse gases

Answer: (D) increased rainfall rates near power plants

Question: In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change? (A) increased inorganic matter in soil (B) increased use of fertilizers on crops (C) increased buildup of greenhouse gases (D) increased rainfall rates near power plants Answer: (C) increased buildup of greenhouse gases

null

When the evolution gets change, the amount of the organism will be change by the evolution.

null

Overall, the microbial community fluctuates with the diet of the host – different microbes are required to breakdown different types of plants.

null

If you apply a force to an object, you may change its energy.

MCAS_2007_8_5170

Which of the following identifies the primary function of a radio station tower in a communication system?

{ "label": [ "A", "B", "C", "D" ], "text": [ "decoder", "encoder", "receiver", "transmitter" ] }

D

Question: Which of the following identifies the primary function of a radio station tower in a communication system? (A) decoder (B) encoder (C) receiver (D) transmitter

Answer: (D) transmitter

Answer: (C) receiver

Question: Which of the following identifies the primary function of a radio station tower in a communication system? (A) decoder (B) encoder (C) receiver (D) transmitter Answer: (D) transmitter

Mercury_SC_406660

Some animals, such as squirrels, may bury acorns. Which of the following is most likely to happen to the acorns after they have been buried?

{ "label": [ "A", "B", "C", "D" ], "text": [ "The acorns will be carried away by the wind.", "The acorns will attach to another organism.", "The acorns will have a chance to sprout.", "The acorns will turn into fossils." ] }

C

Question: Some animals, such as squirrels, may bury acorns. Which of the following is most likely to happen to the acorns after they have been buried? (A) The acorns will be carried away by the wind. (B) The acorns will attach to another organism. (C) The acorns will have a chance to sprout. (D) The acorns will turn into fossils.

Answer: (C) The acorns will have a chance to sprout.

Answer: (A) The acorns will be carried away by the wind.

Question: Some animals, such as squirrels, may bury acorns. Which of the following is most likely to happen to the acorns after they have been buried? (A) The acorns will be carried away by the wind. (B) The acorns will attach to another organism. (C) The acorns will have a chance to sprout. (D) The acorns will turn into fossils. Answer: (C) The acorns will have a chance to sprout.

null

Close ecological relationship between two or more organisms of different species that live in direct contact with one another

Mercury_7007805

Which biological activity occurs in a repeated rhythm?

{ "label": [ "A", "B", "C", "D" ], "text": [ "sneezing", "coughing", "breathing", "blinking" ] }

C

Question: Which biological activity occurs in a repeated rhythm? (A) sneezing (B) coughing (C) breathing (D) blinking

Answer: (C) breathing

Answer: (A) sneezing

Question: Which biological activity occurs in a repeated rhythm? (A) sneezing (B) coughing (C) breathing (D) blinking Answer: (C) breathing

null

Consumers obtain energy by eating other organisms.

null

Small amounts of water evaporates from rivers, streams, and lakes and joins that water vapor.

null

Some mutants exhibit same phenotypes.

VASoL_2008_3_24

While a sailor was out fishing, he got lost at sea. Which object would help him direct the boat back to shore?

{ "label": [ "A", "B", "C", "D" ], "text": [ "Rope", "Magnetic compass", "Blanket", "Measuring tape" ] }

B

Question: While a sailor was out fishing, he got lost at sea. Which object would help him direct the boat back to shore? (A) Rope (B) Magnetic compass (C) Blanket (D) Measuring tape

Answer: (B) Magnetic compass

Answer: (D) Measuring tape

Question: While a sailor was out fishing, he got lost at sea. Which object would help him direct the boat back to shore? (A) Rope (B) Magnetic compass (C) Blanket (D) Measuring tape Answer: (B) Magnetic compass

null

A teaspoonful is used to a gallon of water.

VASoL_2010_5_31

Which item is designed to change electrical energy into heat energy?

{ "label": [ "A", "B", "C", "D" ], "text": [ "Alarm clock", "Hand dryer", "Fan", "Telephone" ] }

B

Question: Which item is designed to change electrical energy into heat energy? (A) Alarm clock (B) Hand dryer (C) Fan (D) Telephone

Answer: (B) Hand dryer

Answer: (C) Fan

Question: Which item is designed to change electrical energy into heat energy? (A) Alarm clock (B) Hand dryer (C) Fan (D) Telephone Answer: (B) Hand dryer

AKDE&ED_2008_4_45

From Earth, the Sun appears brighter than any other star because the Sun is the

{ "label": [ "A", "B", "C", "D" ], "text": [ "newest star.", "largest star.", "hottest star.", "closest star." ] }

D

Question: From Earth, the Sun appears brighter than any other star because the Sun is the (A) newest star. (B) largest star. (C) hottest star. (D) closest star.

Answer: (D) closest star.

Answer: (A) newest star.

Question: From Earth, the Sun appears brighter than any other star because the Sun is the (A) newest star. (B) largest star. (C) hottest star. (D) closest star. Answer: (D) closest star.

NYSEDREGENTS_2006_4_3

Sleet and hail are forms of

{ "label": [ "A", "B", "C", "D" ], "text": [ "clouds", "energy", "evaporation", "precipitation" ] }

D

Question: Sleet and hail are forms of (A) clouds (B) energy (C) evaporation (D) precipitation

Answer: (D) precipitation

Answer: (B) energy

Question: Sleet and hail are forms of (A) clouds (B) energy (C) evaporation (D) precipitation Answer: (D) precipitation

null

Therefore, any factor reducing the abundance or availability of sandeels is likely to have a negative effect and lead to population declines.

null

Most plants need moisture.

Mercury_7191590

Jake is testing how light affects plant growth. He grows two plants in identical pots with the same amount of water and fertilizer. Jake grows one of the plants in the sun, and the other in the shade. Which part of Jake's process indicates that there is a control for this investigation?

{ "label": [ "A", "B", "C", "D" ], "text": [ "He is growing plants in identical pots.", "He is using the same amount of water.", "He is growing one plant out of the sun.", "He is using the same amount of fertilizer." ] }

C

Question: Jake is testing how light affects plant growth. He grows two plants in identical pots with the same amount of water and fertilizer. Jake grows one of the plants in the sun, and the other in the shade. Which part of Jake's process indicates that there is a control for this investigation? (A) He is growing plants in identical pots. (B) He is using the same amount of water. (C) He is growing one plant out of the sun. (D) He is using the same amount of fertilizer.

Answer: (C) He is growing one plant out of the sun.

Answer: (B) He is using the same amount of water.

Question: Jake is testing how light affects plant growth. He grows two plants in identical pots with the same amount of water and fertilizer. Jake grows one of the plants in the sun, and the other in the shade. Which part of Jake's process indicates that there is a control for this investigation? (A) He is growing plants in identical pots. (B) He is using the same amount of water. (C) He is growing one plant out of the sun. (D) He is using the same amount of fertilizer. Answer: (C) He is growing one plant out of the sun.

null

Question: What animal is described as having powers of concentration bent on serving its master? (A) cat (B) dog (C) horse (D) parrot Answer: (B) dog

NYSEDREGENTS_2006_8_3

In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere?

{ "label": [ "1", "2", "3", "4" ], "text": [ "hydrogen, helium, and water vapor", "hydrogen, methane, and ozone", "carbon dioxide, water vapor, and nitrogen", "carbon dioxide, methane, and helium" ] }

3

Question: In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere? (1) hydrogen, helium, and water vapor (2) hydrogen, methane, and ozone (3) carbon dioxide, water vapor, and nitrogen (4) carbon dioxide, methane, and helium

Answer: (3) carbon dioxide, water vapor, and nitrogen

Answer: (4) carbon dioxide, methane, and helium

Question: In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere? (1) hydrogen, helium, and water vapor (2) hydrogen, methane, and ozone (3) carbon dioxide, water vapor, and nitrogen (4) carbon dioxide, methane, and helium Answer: (3) carbon dioxide, water vapor, and nitrogen

null

[21] Fights establish dominance relationships among males, and determine who gets access to estrous females.

null

Some spheres fill with water.

VASoL_2010_5_1

Which of these human activities most relies on high-quality soil?

{ "label": [ "A", "B", "C", "D" ], "text": [ "Hiking", "Hunting", "Coal mining", "Growing crops" ] }

D

Question: Which of these human activities most relies on high-quality soil? (A) Hiking (B) Hunting (C) Coal mining (D) Growing crops

Answer: (D) Growing crops

Answer: (C) Coal mining

Question: Which of these human activities most relies on high-quality soil? (A) Hiking (B) Hunting (C) Coal mining (D) Growing crops Answer: (D) Growing crops

Mercury_7085348

Which of these provides the best evidence that the environment of Earth has changed over millions of years?

{ "label": [ "A", "B", "C", "D" ], "text": [ "active migration of sand dunes", "polished appearance of rock surfaces", "marine fossils found in mountains", "bones of animals found on the ground" ] }

C

Question: Which of these provides the best evidence that the environment of Earth has changed over millions of years? (A) active migration of sand dunes (B) polished appearance of rock surfaces (C) marine fossils found in mountains (D) bones of animals found on the ground

Answer: (C) marine fossils found in mountains

Answer: (A) active migration of sand dunes

Question: Which of these provides the best evidence that the environment of Earth has changed over millions of years? (A) active migration of sand dunes (B) polished appearance of rock surfaces (C) marine fossils found in mountains (D) bones of animals found on the ground Answer: (C) marine fossils found in mountains

null

Question: What was the name of the parliament of the Weimar Republic? (A) Reichstag (B) Bundestag (C) Landtag (D) Storting Answer: (A) Reichstag

null

Most diets include grain.

null

In meiosis one the prophase, metaphase, anaphase and telophase will divide the cell into two and separate the homologous pairs.

null

Second, females occasionally seem to respond to the sexual swellings of others by swelling themselves.

Mercury_7222968

In 2004 the Hubble space telescope captured images of distant star clusters, each containing about a million stars. These star clusters were most likely part of which structure?

{ "label": [ "A", "B", "C", "D" ], "text": [ "a black hole", "a galaxy", "a nebula", "a solar system" ] }

B

Question: In 2004 the Hubble space telescope captured images of distant star clusters, each containing about a million stars. These star clusters were most likely part of which structure? (A) a black hole (B) a galaxy (C) a nebula (D) a solar system

Answer: (B) a galaxy

Answer: (D) a solar system

Question: In 2004 the Hubble space telescope captured images of distant star clusters, each containing about a million stars. These star clusters were most likely part of which structure? (A) a black hole (B) a galaxy (C) a nebula (D) a solar system Answer: (B) a galaxy

Mercury_7133665

Which action illustrates a chemical change?

{ "label": [ "A", "B", "C", "D" ], "text": [ "painting a wood chest", "sawing a wood plank", "burning wood chips", "cutting down a tree" ] }

C

Question: Which action illustrates a chemical change? (A) painting a wood chest (B) sawing a wood plank (C) burning wood chips (D) cutting down a tree

Answer: (C) burning wood chips

Answer: (A) painting a wood chest

Question: Which action illustrates a chemical change? (A) painting a wood chest (B) sawing a wood plank (C) burning wood chips (D) cutting down a tree Answer: (C) burning wood chips

null

In some few cases, however, plants have become habituated to new conditions.

null

a symbiotic relationship between two organisms of different species in which one derives some benefit while the other is unaffected.

ACTAAP_2008_7_14

An Italian scientist named Alessandro Volta invented the Voltaic pile in 1800. It was able to produce a steady electrical current. Based on this description, what is the modern equivalent of the Voltaic pile?

{ "label": [ "A", "B", "C", "D" ], "text": [ "a wire", "a battery", "a resistor", "a light bulb" ] }

B

Question: An Italian scientist named Alessandro Volta invented the Voltaic pile in 1800. It was able to produce a steady electrical current. Based on this description, what is the modern equivalent of the Voltaic pile? (A) a wire (B) a battery (C) a resistor (D) a light bulb

Answer: (B) a battery

Answer: (A) a wire

Question: An Italian scientist named Alessandro Volta invented the Voltaic pile in 1800. It was able to produce a steady electrical current. Based on this description, what is the modern equivalent of the Voltaic pile? (A) a wire (B) a battery (C) a resistor (D) a light bulb Answer: (B) a battery

MCAS_2003_8_30

The surface gravity of Pluto is the weakest of the nine planets because Pluto

{ "label": [ "A", "B", "C", "D" ], "text": [ "has the lowest temperature.", "has the smallest mass.", "rotates the slowest.", "is farthest from the Sun." ] }

B

Question: The surface gravity of Pluto is the weakest of the nine planets because Pluto (A) has the lowest temperature. (B) has the smallest mass. (C) rotates the slowest. (D) is farthest from the Sun.

Answer: (B) has the smallest mass.

Answer: (A) has the lowest temperature.

Question: The surface gravity of Pluto is the weakest of the nine planets because Pluto (A) has the lowest temperature. (B) has the smallest mass. (C) rotates the slowest. (D) is farthest from the Sun. Answer: (B) has the smallest mass.