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A) coal B) cotton C) copper D) petroleum 2.
A) water B) sunlight C) metals D) trees 3.
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A) C B) A C) B D) D 4.
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A) fossil fuels B) electricity C) boiling water D) petroleum 5.
not an alternative to fossil fuels?A) geothermal energy B) hydroelectric power C) nuclear energy D) diesel fuel 6.
A) exposure to sunlight B) access to a river C) access to a natural geyser D) wind 7.
A) when exposed to wind. B) in sunlight. C) in fast currents of water. D) in turbine generators. 8.
A) carbon dioxide B) CFCs C) radon gas D) ozone 9.
A) paper scraps. B) plant materials. C) leftover fertilizers. D) plastics. 10.
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A) glass B) metals C) radioactive wastes D) plastics
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