Acid rain is rainfall which has been rendered acidic by pollutants in the atmosphere. This kind of rain is typically harmful to forests and lakes.
The main cause of acid rain is human activities. The burning of fossil fuels such coal in electrical generating plants and crude oil products such as gasoline and diesel in car engine releases sulphur dioxide and nitrogen oxide into the atmosphere.
These compounds mix with water very high up in the atmosphere and form acid pollutants which fall on the ground as acid rain.
Use of clean energy will eliminate burning of fossil fuels and thus no acid rain will be produced.
A spring forms where the water table intersects the ground surface. Sometimes, the ground surface is lower than the water table. This forms a natural water flow as a spring.
An artesian well occurs where pressurized formations containing ground water is found.
Unsaturated zone is not filled with ground water.
An aquifer is a porous and permeable formation that can store ground water
