Which of the following factors can decrease biological oxygen demand BOD of any fresh water ecosyste...........

General Science (Easy) Physics

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Which of the following factors can decrease biological oxygen demand (BOD) of any fresh water ecosystem?

Large amount of sewage

Large biomass accumulation and decomposition

Increased organic matter pollution

Low temperature and low plant biomass accumulation

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Explanation:

Large biomass accumulation and decomposition

Biological oxygen demand directly affects the amount of dissolved oxygen in rivers and streams. The rate of oxygen consumption is affected by a number of variables: temperature, pH, the presence of certain kinds of microorganisms, and the type of organic and inorganic material in the water.