Which one of the following is the cause of acid rain?

The correct answer is Air Pollution.

Key Points

• Acid rain is rain that has been made acidic by certain pollutants in the air.
• It 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, and ultimately falls with rain. 
• Effects:
  • It depletes all nutrients which are required for the growth and survival of plants.
  • It alters the composition of the soil, ultimately reducing the crop yield.
  • It causes respiratory issues in animals and humans.
  • It affects the aquatic ecosystem by altering the chemical composition of the water.
  • It corrodes the buildings and monuments made up of stones and metals.