1.

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

Answer»

for the photochemical BREAKDOWN of waste present in `1m^3` volume of a WATER BODY .
for sustaining life in a water body.
by bacteria to break - down organic waste in a certain volume of a water sample .
by ANAEROBIC bacteria to breakdown inorganic waste present in a water body .

Answer :C


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