Disease aggravated by pollution is

What are the various components of domestic sewage? Discuss the effects of discharging sewage into a river.

What are the effects of thermal power plants on aquatic life?

Which of the following non-ionizing radiations causes damage to $DNA$?

Fly ash is a/an

The phenomenon in which nutrient enrichment of a water body supports a dense growth of one or many organisms but decreases the species diversity is called: