Measurement of rate of oxygen utilisation by a unit volume of water over a period of time is to measure</h2></d…

Crop production without using chemicals is called as</h2></div>

Forest destruction results in<span><br> </span></h2></div>

Name the unit which is used to measure the thickness of ozone layer?</h2></div>

In an agriculture field there is a prevalence of the following organism and crop disease which are affection the crop yi…

Mention the information that health workers derive by measuring BOD of a water body.</h2></div>

Ozone layer is disturbed by</h2></div>

What is greenhouse effect?</h2></div>