List at least five important sources responsible for water pollution.</h2></div>

What is organic farming?</h2></div>

The common refrigerant chlorofluoromethane (Freon) and NO<span class="katex"><span class="katex-…

What do global problems mean? Which are the global problems that organisms are facing today?<br> </h2></d…

It is a common practice to plant trees and shrubs near the boundary walls of buildings<span>. What purpose do they…

What is the reason for the increase in the BOD?

UV radiations cause</h2></div>

A lake with an inflow of domestic sewage, rich in organic waste, may result in<br> </h2></div>