(Question)
Q: In the scientific method, what is the initial, unproven explanation for why something is occurring? Choices: - concepts - idea - theories - hypothesis A:
(Answer)
hypothesis

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

(Question)
Q: Which cycle tracks the flow of nitrogen through an ecosystem? Choices: - nitrogen reaction - water cycle - life cycle - nitrogen cycle A:
(Answer)
nitrogen cycle