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Untreated Sewage Is Released into a River

Question 9

Multiple Choice

Untreated sewage is released into a river. Which of the following statements is FALSE?


A) The untreated sewage decreases the dissolved oxygen.
B) The untreated sewage is a health hazard.
C) The untreated sewage increases the BOD.
D) The untreated sewage kills bacteria.
E) All of the statements are true.

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