Which of the following could be an effect of an excess ofsewage running into a freshwater reservoir?(a) It could cause the water to become polluted and nonpo-table.(b) It could cause an increase in the biological oxygen de-mand (BOD).(c) It could cause oxygen depletion, leading to an increasein the anaerobic microbial population.(d) Large quantities of organic wastes could be left behind,killing off many plants and animals or causing animalsto migrate.(e) All of the above.
Which of the following could be an effect of an excess ofsewage running into a freshwater reservoir?(a) It could cause the water to become polluted and nonpo-table.(b) It could cause an increase in the biological oxygen de-mand (BOD).(c) It could cause oxygen depletion, leading to an increasein the anaerobic microbial population.(d) Large quantities of organic wastes could be left behind,killing off many plants and animals or causing animalsto migrate.(e) All of the above.
Chapter12: Water Requirements For Aquaculture
Section: Chapter Questions
Problem 28SA
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Question
Which of the following could be an effect of an excess of
sewage running into a freshwater reservoir?
(a) It could cause the water to become polluted and nonpo-
table.
(b) It could cause an increase in the biological oxygen de-
mand (BOD).
(c) It could cause oxygen depletion, leading to an increase
in the anaerobic microbial population.
(d) Large quantities of organic wastes could be left behind,
killing off many plants and animals or causing animals
to migrate.
(e) All of the above.
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