What is meant by Biochemical oxygen?
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the oxygen used in meeting the metabolic needs of aerobic microorganisms in water that are rich in organic matter (as water polluted with sewage) —are also called biological oxygen demand
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Biochemical oxygen is the amount of dissolved oxygen needed by aerobic decomposers to break down the organic materials in a given volume of water at a certain temperature over a specified time period; if oxygen levels are depleted, fish and other animals die.
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