Q: Carbon fixation is the first step of what cycle involving light reactions? Choices: - sun cycle - life cycle - water cycle - calvin cycle A:
calvin cycle
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Q: What is the term for anything that can cause cancer? Choices: - contaminate - chemical - contamination - carcinogen A:
carcinogen
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Q: What do people use from aquifers from springs or wells? Choices: - oxygen - salt - soil - fresh water A:
fresh water
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Q: Sterols are a subgroup of what? Choices: - nuclides - nutrients - antibiotics - steroids A:
steroids
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