Microbes in Human WelfareHard
Question
How many statements are correct regarding biological oxygen demand :-
(A) Amount of O2 required by microbes to decompose organic waste.
(B) Amount of O2 produced by microbes on decomposing organic waste
(C) Amount of O2 required by microbes to survive
(A) Amount of O2 required by microbes to decompose organic waste.
(B) Amount of O2 produced by microbes on decomposing organic waste
(C) Amount of O2 required by microbes to survive
Options
A.A and B
B.Only B
C.Only A
D.A, B & C
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