question: What decreases tooth decay?
choices.text: vitamin content melanin content homeostasis thermal expansion estrogen drinking water ribonucleic acid warmer air
choices.label: A B C D E F G H
fact2: Humans get most of their fluoride in drinking water.
combinedfact: Drinking water decreases tooth decay.
formatted_question: What decreases tooth decay? (A) vitamin content (B) melanin content (C) homeostasis (D) thermal expansion (E) estrogen (F) drinking water (G) ribonucleic acid (H) warmer air