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.
Answer:A
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.