NEET BIOLOGY

Detailed explanation-1: -One of the major sources of air pollution in China and India is from sulfur-dioxide emissions. The major contributor to the sulfur-dioxide emissions is due to increased coal consumption in the industrial sectors in both countries. More than 70% of China’s energy still comes from brown coal, the dirtiest fuel of all.

Detailed explanation-2: -Reducing coal consumption Coal is the single-largest source of air pollutants and greenhouse emissions in China. The country heavily relies on coal to meet its energy demand at 66% of the energy mix.

Detailed explanation-3: -Agricultural pollution sources: There are three major sources that contribute agricultural pollution to rivers: (1) agricultural residues, (2) fertilizers and pesticides, (3) animal husbandry, and (4) excess salts from applied irrigation water.

Detailed explanation-4: -Agricultural air pollution comes mainly in the form of ammonia, which enters the air as a gas from heavily fertilized fields and livestock waste.