the biochemical oxygen demand (bod) is choose one: a. high when microorganisms are absent in the environment. b. usually increased by a decrease in phosphate concentrations. c. a measure of respiration in an environmental sample. d. usually decreased by an increase in organic compounds.

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25-10-2022
Biology

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the biochemical oxygen demand (bod) is choose one: a. high when microorganisms are absent in the environment. b. usually increased by a decrease in phosphate concentrations. c. a measure of respiration in an environmental sample. d. usually decreased by an increase in organic compounds.

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Paruljain Paruljain · Answer 1 · 2022-10-28T14:37:00+02:00

The biochemical oxygen demand (BOD) is a measure of respiration in an environmental sample. So, the correct option is (c).

The amount of dissolved oxygen (DO) required (i.e. requested) by aerobic biological organisms to decompose organic material present in a given water sample at a particular temperature over a certain time period is known as the biochemical oxygen demand (BOD).

The BOD value, which is frequently used as a proxy for the level of organic pollution in water, is typically given in milligrams of oxygen used per litre of sample during 5 days of incubation at 20 °C. The effectiveness of wastewater treatment facilities is measured by BOD reduction. The short-term effect of wastewater effluents on the oxygen levels of the receiving water is indicated by the BOD of the wastewater.

Learn more about BOD here:

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