As the amount of organic material in a water system increases,the BOD
A)decreases.
B)remains constant.
C)increases.
D)cannot be predicted.

Question

Quizplus · Accepted Answer

BOD stands for Biochemical Oxygen Demand, which is a measure of the amount of oxygen needed by microorganisms to decompose the organic matter in water. As the amount of organic material in a water system increases, the BOD also increases because there are more microorganisms present that need to consume oxygen to decompose the organic matter.

As the Amount of Organic Material in a Water System