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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
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.
By: Pradeep Kumar ProfileResourcesReport error
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