NEET BIOLOGY

Detailed explanation-1: -The activities include air pollution sources emitting sulfur and nitrogen gases like factories, power generation facilities, and automobiles. In particular, the use of coal for electrical power generation is the biggest contributor to gaseous emissions leading to acid rain.

Detailed explanation-2: -Gases such as sulphur dioxide and nitrogen oxides change into acids when they contact water. Acid deposition occurs when sulphur dioxide and nitrogen oxide emissions transform into secondary pollutants.

Detailed explanation-3: -Acid rain is caused largely by sulphur dioxide and oxides of nitrogen emitted by industrial activities such as coal burning. The gases dissolve in rainwater to form acids. Much of this industry is based in the United States, but the weather exports pollution north of the border.

Detailed explanation-4: -Power plants release the majority of sulfur dioxide and much of the nitrogen oxides when they burn fossil fuels, such as coal, to produce electricity. In addition, the exhaust from cars, trucks, and buses releases nitrogen oxides and sulfur dioxide into the air. These pollutants cause acid rain.

Detailed explanation-5: -Acid rain is a problem in eastern Canada because many of the water and soil systems in this region lack natural alkalinity-such as a lime base-and therefore cannot neutralize acid naturally.