Q: What is the name for the pores in leaves that allow a plant to retain water or exchange gases? Choices: - neurons - chloroplasts - rhizomes - stomata A:
stomata

Q: The toothlessness of modern birds, which serves to trim the weight of the head, is an example of what? Choices: - mutation - genetic drift - variety - adaptation A:
adaptation

Q: Q: What type of ions play critical roles in light-dependent reactions? Choices: - calcium - silicon - helium - hydrogen A:
A: hydrogen

Question: Q: Air quality is a measure of what in the air? Choices: - nitrogen - precipitation - oxygen - pollutants A:
Answer: pollutants

*Question*
Q: Ripe fruits are usually red, orange, yellow, or what? Choices: - white - blue - black - purple A:
**Answer**
purple

*Question*
Q: What is the term for heat being transferred from molecule to molecule? Choices: - convection - oxidation - decomposition - conduction A:
**Answer**
conduction