Which one of the following is a greenhouse gas?</h2></div>

Which of the following is depleted by CFCs?</h2></div>

Organic farming does not employ<br> </h2></div>

It is said that Taj is getting destroyed due to</h2></div>

BOD is</h2></div>

In which region is the depletion of ozone particularly marked?

How will climate changes affect the various animal species?</h2></div>

Who introduced the concept of organic farming?<br> </h2></div>