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Multiple Choice

This activity contains 11 questions.

Question 1
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It is important to distinguish between point source and nonpoint source pollution because point source pollution is much easier to control. Which of the following is an example of nonpoint source pollution?
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Question 2
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In which of the following locations is thermal pollution the biggest problem?
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Question 3
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Primary sewage treatment removes what percentage of the biochemical oxygen demand (BOD) from domestic sewage?
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Question 4
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Some of the oil pollution of our oceans has always occurred naturally through natural leaks in the ocean floor. However, this source accounts for only about 9% of the oil that reaches our oceans. Which of the following is the primary source of oil pollution in the oceans?
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Question 5
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Which of the following pathogenic microorganisms is unlikely to be contracted through water?
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Question 6
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What type of pollution-controlling device is pictured here?
pollution-controlling device photo
Photo courtesy of USDA NRCS.
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Question 7
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At what stage in the wastewater treatment procedure would nutrients such as nitrogen and phosphorus be removed in a secondary treatment facility?
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Question 8
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Which U.S. law primarily regulates the quality of tap water in your home?
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Question 9
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Based on the map in Figure 11.33, which country would likely be a great fishing nation?
Figure 11_33
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Question 10
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What pollutant has only recently (in the past 10 years) been discovered in many inland waters of the developed nations?
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Question 11
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Match pollutant with pollution type.

Using the pull-down menus, match each item in the left column to the corresponding item in the right column.
A thermal pollution
B biochemical oxygen demand (BOD)
C eutrophication
D heavy metal pollution
End of Question 11

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