Adding untreated sewage to a freshwater lake would cause the biochemical oxygen demand to
A) decrease.
B) increase.
C) stay the same.
D) The answer cannot be determined based on the information provided.

Question

Quizplus · Accepted Answer

Adding untreated sewage increases the amount of organic matter in the water, which in turn increases the biochemical oxygen demand as microorganisms break down the waste, consuming more oxygen.

Adding Untreated Sewage to a Freshwater Lake Would Cause the Biochemical