The permanent removal of forests and woodlands is called</h2></div>

What does solid waste consist?<span><br> </span></h2></div>

Greenhouse effect is due to the presence of</h2></div>

List at least three gaseous air pollutants that are emitted from automobiles and industries.</h2></div>

Major source of emissions in a motor vehicle: crackcase, carburettors, fuel tank and<span><br> </span>…

Which one of the following ways can be used to control global warming?

What does the continuous depletion of ozone lead to?

Which of the following waste can be put into deep pits in the ground and be left for the natural breakdown?