Environmental Science Chapter 11

25 July 2022
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_________ is the water that infiltrates through the ground and is stored in spaces in soil and rock.
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Groundwater
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The amount of groundwater that can fill the spaces found in soil and rock is determined by the
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porosity
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Based on Figure 11.11, water availability per person per year is lowest in these two countries
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Africa and Asia
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All of the following are example of point source pollution, except
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Runoff from farms
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The total amount of water on the Earth ____________ from year to year and the hydrologic cycle ________________.
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stays about the same; moves it from one place to another place
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Most water in the atmosphere has evaporated from the ocean, and ______ rain falls back into the sea. About ________ % of the earth's total rain falls on land.
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most; 10
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The hydrologic compartment that contains the greatest amount of fresh water is
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ice and snow
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The place where aquifers are most likely to be contaminated is at
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recharge zones.
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A country's renewable water supplies are generally made up of
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surface runoff and infiltration into accessible aquifers.
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Which of the following factors is the most important factor in determining whether a country is "water rich" or "water poor"?
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renewable water supplies
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Withdrawal is the total amount of water
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taken from rivers, lakes, or aquifers.
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In general, water use in poor countries is dominated by
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agricultural use.
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A method of increasing water supplies that has been successful, if expensive, is
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desalinization by reverse osmosis.
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Which would not be a principal problem that has resulted from the construction of large dams?
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salinization of water bodies and surrounding soil.
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What would you not find in water that has been through tertiary treatment?
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Dissolved metals
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The activity that uses the greatest share of U.S. household water is
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flushing the toilet.
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Factories, sewage treatment plants, and oil wells are __________ sources of water pollution
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Point
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_________ sources of water pollution are relatively easy to monitor and regulate while _____________ sources of water pollution are difficult to monitor and clean up.
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Point; nonpoint
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____________ is a point source of water pollution; _____________ is a nonpoint source of water pollution.
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Power plant effluent; golf course runoff
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The water pollutant that most commonly threatens human health is
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pathogenic organisms
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Coliform bacteria populations are routinely monitored in drinking water supplies, swimming pools, and at beaches because these bacteria
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indicate the presence of feces in water
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Tertiary treatment of sewage produces water that is NOT free of
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Nutrients
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The city of Arcata, California, is notable because it designed a _________ to treat its sewage.
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natural marsh
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Best available technology (BAT) standards are standards set for
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Toxic substances
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Plants that take up heavy metals found in water would be an example of
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Bioremeditation
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The residence time for an average water molecule in the ocean is about ________ years
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3000
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A(n) ______________ is all the land drained by a particular river.
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watershed
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Many cities in the American Southwest rely on sources of drinking water contaminated with
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Arsenic
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An oligotrophic lake would be very productive
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False
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Domestic water conservation in the United States would save about 20% of the water we now use. Therefore, we need to come up with better technology to avoid strict restrictions in the future.
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False
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The heating of natural waterways by power plants and other industrial facilities is a form of water pollution.
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True
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The National Pollution Discharge Elimination System (NPDES) was established as a part of the Resource Conservation and Recovery Act (RCRA).
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False
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Raw sewage would contribute to the biochemical oxygen demand of a stream and cause fewer organisms to be present.
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True
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Application of fertilizer to farm fields is an example of cultural eutrophication.
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True
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A TMDC measures the toxicity of a metal found in a water body.
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True