Deforestation will decrease<span><br> </span></h2></div>

<span>Growing forest where there were no forest before is known as :</span><br> </h2></div&gt…

BOD refers to</h2></div>

Infectious biomedical waste includes</h2></div>

Suggest a few measures for controlling carbon dioxide levels in the atmosphere.</h2></div>

40 to 50% depletion in ozone layer occurs in the .......... polar region</h2></div>

Study the graph. Explain how is oxygen concentration affected in the river when sewage is discharged in it.</h2>&l…

Ultraviolet light causes</h2></div>