Heat from our sun passes through the atmosphere, causing it to warm up. Most of it warms the earth's surface. While the earth is warming up, it sends out this heat in the form of radiation. The atmosphere traps part of ths heat, and the rest escapes into space. This effect that takes place on earth...

What causes air pollution? Air pollution results mainly from the incomplete combustion of several fuels, such as coal, petrol and wood. The primary sources of pollution from combustion are furnaces in factories, engines in vehicles and burning of trash, in the form of particles or gases. Air Pollu...