First slide

Water Pollution and its Control

Question

A lake which is rich in organic waste may result in

Easy

A

increased population of aquatic organisms due to minerals
B

drying of the lake due to algal bloom
C

increased population of fish due to lots of nutrients
D

mortality of fish due to lack of oxygen

Solution

Presence of large amounts of nutrients in waters also causes excessive growth of planktonic algae, called an algal bloom which imparts a distinct colour to the water bodies. The organic waste formed from these blooms cause deterioration of the water quality, shortage of oxygen and fish mortality.

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