Q: In general, objects expand in all directions as temperature does what? Choices: - stays the same - cycles - decreases - increases A:
increases

Q: Virtually all of the effects of pregnancy can be attributed in some way to the influence of what? Choices: - proteins - enzymes - acids - hormones A:
hormones

Q: Metalloids, metals, and nonmetals are all classes of what? Choices: - compounds - protons - matter - elements A:
elements

Q: Researchers have also used insect courtship to explore genetic variation underlying differences in what? Choices: - reproduction - function - instance - behavior A:
behavior