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| What is the primary gas responsible for the Earth's greenhouse effect? | |
| A) Oxygen | |
| B) Carbon dioxide | |
| C) Hydrogen | |
| D) Nitrogen | |
| E) Methane | |
| Correct Answer: B) Carbon dioxide | |
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| What is the process by which plants make their own food using sunlight? | |
| A) Respiration | |
| B) Photosynthesis | |
| C) Fermentation | |
| D) Digestion | |
| E) Transpiration | |
| Correct Answer: B) Photosynthesis | |
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| What is the chemical symbol for the element gold? | |
| A) G | |
| B) Au | |
| C) Ag | |
| D) Go | |
| E) Gl | |
| Correct Answer: B) Au | |
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| What is the fundamental unit of life, capable of carrying out all the functions essential for living organisms? | |
| A) Cell | |
| B) Atom | |
| C) Molecule | |
| D) Gene | |
| E) Tissue | |
| Correct Answer: A) Cell | |
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| Which planet is often referred to as the "Red Planet" due to its reddish appearance? | |
| A) Venus | |
| B) Jupiter | |
| C) Mars | |
| D) Mercury | |
| E) Saturn | |
| Correct Answer: C) Mars |