Per18_exercise - Period 18 Exercise Answers E.1 Water power...

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Period 18 Exercise Answers E.1 Water power and tidal power are similar because they both a) derive their energy from solar energy. b) release significant amounts of greenhouse gasses like carbon dioxide. c) may use the same technology to harness the energy of moving water. d) do not harm the environment. e) Both a) and c) are correct. E.1 = c E.2 When used as a fuel, what do firewood and alcohol have in common? a) They are both called biomass b) They are both renewable. c) They both derive their energy from solar energy. d) When burned, they both release carbon dioxide into the atmosphere. e) All of the above are common properties of firewood and alcohol as fuels. E.2 = e
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E.3 Gasohol is a) a fuel for automobiles derived from animal dung. b) not used in the United States because of the intoxicating fumes. c) the condition of being flatulent after drinking an alcoholic beverage. d) a mixture of alcohol (10%) and gasoline (90%). e) None of the above is correct.
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