Ques:Q: Cutting down on the use of chemical fertilizers and preserving wetlands are ways to prevent what "unlivable" regions in bodies of water? Choices: - inhabitable zones - hostile zones - fresh zones - dead zones A:

Ans:dead zones
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Ques:Q: What is the only planet that is known to support life? Choices: - Venus - Mars - Saturn - earth A:

Ans:earth
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Ques:Q: Mutations cannot be passed on to offspring if they occur in what type of cells? Choices: - put cells - kept cells - blood cells - body cells A:

Ans:body cells
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Ques:Q: What is the term for proportion of amount of product actually produced in a chemical reaction versus predicted amount ? Choices: - calculus yield - decrease yield - percent impact - percent yield A:

Ans:
percent yield
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