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Environmental Issues

Question

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A lake with an inflow of domestic sewage rich in organic waste may result in

Drying of the lake very soon due to algal bloom

An increased production of fish due to lot of nutrients

Death of fish due to lack of oxygen

Increased population of the aquatic food web organisms

Solution

C.

Death of fish due to lack of oxygen

Oxygen level goes down due to algel bloom. This bloom also releases some toxic chemical which kills fishes and other animals.

Some More Questions From Environmental Issues Chapter

Ozone depletion will cause :

The meaning of BOD is :

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Smog is a mixture of :

WHO’s recommendations about the industrial noise limit is of :

Which of the atmospheric layer contains ozone layer ?

The amount of dissolved oxygen required by the microorganisms to degrade the organic wastes present in water is called ?

The cause of acid rain is :

Which one of the following causes ozone depletion ?

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