EVERYDAY SCIENCE

Detailed explanation-1: -Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

Detailed explanation-2: -The acid rains have a negative influence on all the life on Earth. They pollute both soil and freshwater aquatic systems. It can cause direct damage to the plant structures and disrupt the photosynthesis process.

Detailed explanation-3: -In areas where buffering capacity is low, acid rain releases aluminum from soils into lakes and streams; aluminum is highly toxic to many species of aquatic organisms.

Detailed explanation-4: -So, the correct answer is ‘Sulphur dioxide’.

Detailed explanation-5: -Acid rain arises from the combustion of fossil fuels and the release of sulfur and nitrogen oxides in the air. These by-products react with the moisture in the air to produce sulfuric and nitric acids and in turn are returned to the earth by snow or rainfall.