Which of the following is the main factor of water pollution?</h2></div>

What is ozone? What is its function in the environment? What emissions from human activities lead to ozone depletion?&lt…

Peak concentration of ozone occurs in the atmosphere above a height of</h2></div>

Radioactive contamination also known as:<span><br> </span></h2></div>

Who is the greatest enemy of nature and organism?</h2></div>

<p>Causes of air pollution are:</p><p>i. Exhaust from automobiles</p><p>ii. Exhaust from f…

Air pollution is caused by:</h2></div>

BOD is</h2></div>