Tuesday, 21 February 2012

Greenhouse



          Greenhouse effect is caused by industrial pollution.Because of the effect earth temperature increased.The data tken by scientists, our earth has been warming up since the Industrial Revolution.Why does it happen? The Factories emissions have created smog in the atmosphere.The earth's atmosphere becomes greenhouse,and the earth and everything inside of it become like the plants in a greenhouse.The sunlight can pass through the zone layer but the heat tranferred by the sunlight cannot escape easily from the layer of smog and is deflected to earth's surface again.