Fish die in water bodies polluted by sewage due to</h2></div>

Excessive exposure of humans to UV-rays results in</h2></div>

Depletion of the Ozone layer in the stratosphere is caused by.</h2></div>

Drained sewage has B.O.D.</h2></div>

What is the main factor of sharply dropping the amount of ozone in the atmosphere?<br> </h2></div>

What does a single chlorine free radical destroy?<span><br> </span></h2></div>

Deforestation destroys________of animals and hence affects wildlife.</h2></div>

The diagram given shows the green house effect. Which of the following would have been in the absence of greenhouse effe…