Question

the amount of oxygen required for the biological decomposition of the organic matter unde aerobic condition is termed as

Answer 1

Biological Oxygen Demand (BOD) should be the correct answer..
Hope it helps!!

Answer 2

ANSWER:

Biological oxygen Demand (BOD) is the the amount of oxygen needed for  biological decomposition of the 'organic matter' under aerobic condition.

EXPLANATION:

The BOD is term used to find the molecular oxygen which is used by bacteria for biochemical degradation of organic matter that are carbonaceous in nature and the oxygen to oxidize the inorganic matter which are sulphides and ferrous ion in nature. It takes five days to determine BOD consumed by organism during specified period.