Name five common water pollutants.</h2></div>

Which of the following options is a major water pollutant nowadays?</h2></div>

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

Which book written by Rachel Carson resulted in banning DDT in USA?<span><br> </span></h2></d…

Select the correct option among the following.<br> </h2></div>

Dobson unit is used in measurement of __________ level.</h2></div>

<span>What are the effects of air pollution?</span><div><span>i. greenhouse effect<br> ii.…

Water pollution is caused by :<br> </h2></div>