Question

Distinguish between dry and wet acidic deposition.

Answer 1

	Dry acidic deposition	Wet acidic deposition
1.	Dry acidic deposition occurs when acidic gases and particles settle directly on the Earth’s surface without rain, snow, fog, or mist.	Wet acidic deposition occurs when acidic substances dissolve in atmospheric moisture and fall to the Earth with rain, snow, fog, or mist.
2.	It mainly involves the direct settling of pollutants such as sulphur dioxide, nitrogen oxides, and acidic particles.	It mainly involves acids such as sulphuric acid and nitric acid that are carried to the Earth through precipitation.
3.	It can damage soil, plants, buildings, monuments, and water surfaces even in the absence of rainfall.	It can increase the acidity of soil and water bodies and damage plants, aquatic life, buildings, and monuments.
4.	It is more common during dry weather conditions.	It occurs when sufficient moisture or precipitation is present in the atmosphere.