A large amount of sewage:
A) generates a high BOD, which raises the level of dissolved oxygen in the water.
B) generates a high BOD, which lowers the level of dissolved oxygen in the water.
C) generates a low BOD, which raises the level of dissolved oxygen in the water.
D) generates a low BOD, which lowers the level of dissolved oxygen in the water.
E) does not affect the BOD.

Question

Quizplus · Accepted Answer

A large amount of sewage generates a high BOD (biochemical oxygen demand), which is the amount of oxygen consumed by microorganisms in breaking down organic matter. As a result, the level of dissolved oxygen in the water is lowered, which can result in negative impacts on aquatic life.

A Large Amount of Sewage