Human population explosion increases the demand for food, water, home, electricity, roads, automobiles etc.
It leads to pollution of air, water and soil.
Pollution is any undesirable change in physical, chemical or biological characteristics of air, land, water or soil. Agents that cause pollution are called as pollutants.
The Government of India has passed the Environment (Protection) Act, 1986 to control environmental pollution and protect and improve the quality of our environment.