A water body has high BOD, indicating that water is</h2></div>

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

The large-scale deforestation that is happening all over world is causing :</h2></div>

_______ waste includes waste from labs, medical origin etc.</h2></div>

Strontium- 90 can enter human body parts in place of<span><br> </span></h2></div>

Waste from hospitals are known as </h2></div>

The e-wastes:<span><br> </span></h2></div>

What are the effects of ozone depletion ?</h2></div>