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Byju's Answer
Standard VII
Chemistry
Organic Impurities
is required b...
Question

is required by microbes to decompose organic wastes efficiently.

A
Nitrogen
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B
Oxygen
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C
Hydrogen
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D
Carbon dioxide
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Solution

The correct option is B Oxygen
Aerobic microorganisms in presence of oxygen break down organic matter and produce carbon dioxide, ammonia, water, heat and hummus, the relatively stable organic end-products.

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