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Question

Foul smell in water bodies like tanks and ponds is due to

A
Aerobiosis
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B
Anaerobiosis
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C
Psammophytes
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D
Biological magnification
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Solution

The correct option is B Anaerobiosis

Eutrophication is a natural state in many lakes and ponds which have a rich supply of nutrients. This leads to decomposition of nutrients through bacteria and other decomposers. The decomposition of huge amounts of biological mass creates a condition wherein carbon dioxide and carbon monoxide are produced and released to the atmosphere. This also emits foul odours which are unpleasant to public convenience.


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