(Q).
Answer the following question given this paragraph: Q: Behind the pupil, a single lens focuses light on a layer of what? Choices: - photons - chloroplasts - electrons - photoreceptors A:
(A).
photoreceptors

(Q).
Answer the following question given this paragraph: Q: What do you call something that controls the uptake of water or another substance in the environment, in order to maintain constant internal conditions? Choices: - sporozoans - protozoans - osmoconformers - osmoregulators A:
(A).
osmoregulators

(Q).
Answer the following question given this paragraph: Tundra is found near the poles and up on high mountains. Q: What kind of biome or climate might you find very close to the earth's poles, as well as up on high mountains? Choices: - tropical - desert - taiga - tundra A:
(A).
tundra