Ques:Answer the following question given this paragraph: Most Americans have plenty of fresh, clean water. But many people around the world do not. In fact, water scarcity is the world's most serious resource problem. How can that be? Water is almost everywhere. But much of it is unusable. What is usable is not always where it is needed. Q: What is the world's most serious resource problem? Choices: - gas shortage - citrus blight - deforestation - water scarcity A:

Ans:water scarcity
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Ques:Answer the following question given this paragraph: Q: Worldwide, viruses seem to play a role in what percentage of the cases of human cancer? Choices: - 20 % - +.15 % - 5% - 15% A:

Ans:15%
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Ques:Answer the following question given this paragraph: Organic chemistry is the study of the chemistry of carbon compounds. Q: Organic chemistry is the study of the chemistry of what? Choices: - hydrogen - metals - oxidation - carbon compounds A:

Ans:carbon compounds
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Ques:Answer the following question given this paragraph: The standard cell potential is positive, so the reaction is spontaneous as written. Tin is oxidized at the anode, while silver ion is reduced at the cathode. Note that the voltage for the silver ion reduction is not doubled even though the reduction half-reaction had to be doubled to balance the overall redox equation. Q: Tin is oxidized at the anode, while silver ion is reduced at? Choices: - anodyne - iodine - gamma - cathode A:

Ans:
cathode
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