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

List at least five important sources responsible for water pollution.</h2></div>

Why is the concentration of ozone less over the north and south poles?</h2></div>

What happens in the tertiary treatment for water pollution?

What happens when higher energy ultraviolet radiations act on the oxygen at the higher level of the atmosphere?</h2&g…

Heat that radiates back from green house gases (green house flux) causes</h2></div>

Why ozone hole forms over Antarctica? How will enhanced ultraviolet radiation affect us?</h2></div>

UV radiations bring about</h2></div>