(Question)
Q: Energy from sunlight enters many ecosystems through what process? Choices: - multiplication - reproduction - isolation - photosynthesis A:
(Answer)
photosynthesis

(Question)
Q: How many classes of biochemical compounds are there? Choices: - one - five - three - four A:
(Answer)
four

(Question)
Q: Circadian rhythms and migration are examples of what kind of behaviors in animals? Choices: - continual - fluid - finite - cyclic A:
(Answer)
cyclic