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Biochemical Oxygen Demand (BOD) is the a...

Biochemical Oxygen Demand (BOD) is the amount of oxygen required (in ppm):

A

by anaerobic bacteria to breakdown inorganic waste present in a water body

B

by bacteria to break-down organic waste in a certain volume of a water sample

C

the photochemical breakdown of waste present in `1 m^(3)` volume of a water body

D

for sustaining life in a water body

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