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

Question

Quizplus · Accepted Answer

Untreated sewage contains organic matter that microorganisms in the water will feed on, leading to increased oxygen demand as they consume the oxygen in the water during the decomposition process.

Adding Untreated Sewage to a Freshwater Lake Would Cause the Biochemical