Exam 11: Water Resources and Water Pollution

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  -On the dilution and decay of degradable wastes figure, choose the zone in which the water needs time and must have an adequate flow rate. -On the dilution and decay of degradable wastes figure, choose the zone in which the water needs time and must have an adequate flow rate.

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Drip irrigation is used on ____________________%of irrigated crop fields in the United States, and ____________________% of irrigated crop fields worldwide.

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4, 1

In the western United States, as compared to the eastern United States, the major water problem(s) is (are)

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A major cause of water waste is the lack of government subsidies for improving the efficiency of water waste.

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  -On the dilution and decay of degradable wastes figure, choose the zone in which populations of organisms with high oxygen requirements will most likely be eliminated. -On the dilution and decay of degradable wastes figure, choose the zone in which populations of organisms with high oxygen requirements will most likely be eliminated.

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In some areas of the Ogallala aquifer, water is being pumped

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Desalination may be accomplished by

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An oligotrophic lake tends to have relatively high levels of dissolved oxygen.

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Which of the following conditions in the Himalayan watershed contribute(s) to flooding in Bangladesh?

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Which of the following is true of flood irrigation?

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  -On the dilution and decay of degradable wastes figure, choose the zone in which the breakdown of degradable wastes by bacteria starts to deplete the dissolved oxygen. -On the dilution and decay of degradable wastes figure, choose the zone in which the breakdown of degradable wastes by bacteria starts to deplete the dissolved oxygen.

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The improvement in point-source water pollution prevention laws that has occurred since 1970 in most developed countries is largely the result of ____________________ political pressure.

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Water supplies in water-short areas can be increased by

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Slowing human population growth is not really an issue for prevention of water pollution.

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Which of the following types of sewage treatment are properly matched?

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Match the items listed below with the appropriate choice Match the items listed below with the appropriate choice    -On the primary and secondary sewage treatment figure, choose the letter that represents where bacteria are killed and the water is clean. -On the primary and secondary sewage treatment figure, choose the letter that represents where bacteria are killed and the water is clean.

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Streams can cleanse themselves of some wastes if we do not ____________________ them.

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A machine for washing clothes has been developed that uses as little as one cup of water for each washing cycle.

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According to the World Resources Institute, what percentage of the water that people use throughout the world is unnecessarily wasted?

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Which of the following actions will reduce irrigation water waste?

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