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

Read the following statements carefully and select the incorrect ones.<div><br> (i)  Development of…

Ozone in the stratosphere is depleted by</h2></div>

How do ultraviolet rays coming from sun affect the living organisms?</h2></div>

Which of the following involves the clearing of the forest?</h2></div>

Define BOD. What is its significance in an aquatic ecosystem?</h2></div>

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

________ is e-waste.<br> </h2></div>