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Natural aging of a lake by biological en...

Natural aging of a lake by biological enrichment of its water called :-

A

Biomagnification

B

Eutrophication

C

FOAM

D

None of these

Text Solution

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The correct Answer is:
B
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Natural ageing of lake by biological enrichment of its water is called

Which of the following statements regarding eutrophication are correct ? (i) Eutrophication is the natural ageing of a lake by nutrient enrichment of its water. (ii) Pollutants from human activities like effluents from the industries and homes can radically accelerate the aging process of a lake. This phenomenon is called as cultural or accelerated eutrophication. (iii) The plant nutrients responsible for eutrophication are nitrates and phosphates. (iv) These phosphates and nitrates accelerate the growth of algae, which utilise oxygen and may deoxygenate the water to kill the fish and other aquatic animals.

How many statements are correct ? a. Biomagnification is the natural ageing of a lake by nutrient enrichment of its water b. After CFC, methane is a major cause of greenhouse effect c. Ozone is a secondary pollutant in troposphere d. The thickness of the ozone is measured in Dobson unit

Nutrient enrichment of water bodies causes

The natural ageing of a lake is called biomagnification.

Biological pollution in water is caused by :

The purpose of biological treatment of waste water is to

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