Air pollution is maximum by</h2></div>

Ozone in stratosphere extends</h2></div>

If global warming continues, the organism which may face more severe threat is</h2></div>

The first reactor mishap occured in<span><br> </span></h2></div>

Ozone hole over Antarctica appear during</h2></div>

If biomedical waste is not handled properly, people are likely to be affected by</h2></div>

What is the increased productivity of ponds and lakes due to excess nutrients called?

Ozone layer depletion may lead to which of the following harmful effects in organisms?</h2></div>