Question

the amount of oxygen required to decay a certain amount of organic matter is called
select one:
○ a. the point source.
○ b. the eutrophication factor.
○ c. the limiting factor.
○ d. the biochemical oxygen demand.

Explanation:

The biochemical oxygen demand (BOD) is defined as the amount of oxygen required by microorganisms to decompose organic matter in water over a specific period. A point - source is a specific and identifiable source of pollution. Eutrophication factor relates to the excessive growth of algae and plants due to nutrient enrichment. A limiting factor restricts the growth of an organism or a process. The description in the question matches the definition of BOD.

Answer:

D. the biochemical oxygen demand.