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19 Cards in this Set
- Front
- Back
Groundwater pollution is often difficult to treat because the pool is usually ___ and the rate of throughput is usually __
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large; slow
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The amount of the nutrients, phosphorus and nitrogen, in groundwater is usually:
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greater in agricultural regions than in natural forests
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In general, the largest point sources of thermal water pollution are
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electrical generating plants
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You are a scientist monitoring disease potential of wastewater treated at a sewage treatment plant. You are most concerned with the concentration of which of the following
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fecal coliform bacteria
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What does B.O.D. stand for?
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Biochemical Oxygen Demand
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Which of the following is not associated with eutrophication?
A. algal blooms B. increased concentration of toxins C. reduced photosynthesis in the water column D. increased nutrient concentrations E. reduced dissolved oxygen |
b
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Fecal coliform bacteria are
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harmless organisms used to trace infectious pathogens
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Wastewater added to commercial fish ponds causes an increase in fish yield because organic waste
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increases the supply of food available
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TF:Water pollution is best defined as the degradation of water quality
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true
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TF:Groundwater is the most easily accessible supply of fresh water
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false
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TF:When nitrogen and phosphorus are added to a body of water, they alter the natural conditions because they are necessary nutrients, usually scarce in nature
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true
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On a weight basis, the most abundant water pollutant is sediment
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true
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A septic tank in rural households can be considered to be a private sewage treatment plant because it treats the household
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wastewater
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Water that has a high concentration of sulfuric acid that drains from mines is called
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acid mine drainage
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The two important nutrients that cause water pollution problems are and .
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phosphorus; nitrogen
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Of the following areas: agricultural, forested, rural, suburban and urban; the highest concentration of nitrogen is found in
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agriculture
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Rivers draining agricultural land or land that is being urbanized can quickly fill with sediment. This has the effect of (increasing/decreasing) the magnitude and (increasing/decreasing) the frequency of flooding
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increasing; increasing
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The process by which a body of water develops a high concentration of nutrients is called
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eutrophication
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Runoff from city streets is an example of an urban (point/nonpoint) source of water pollution
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nonpoint
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