The Greenhouse Effect is a warming of the atmosphere around the Earth. This happens when some gases (carbon dioxide, water vapor, ozone, methane, etc.,) in the atmosphere trap the heat radiated by the Earth. The atmosphere acts like the glass in a greenhouse (it is from here that the greenhouse Effect gets its name). Over the past few hundred years, humans have been burning trees and fossil fuels. This has released many millions of tones of carbon dioxide into the atmosphere. Carbon dioxide is very good at absorbing the sun’s heat. The extra carbon dioxide has caused the atmosphere of the Earth to become warmer. This, in turn, causes more water to evaporate into the atmosphere. Water vapor is also good at absorbing heat, which causes the Earth’s atmosphere to become even warmer. The average temperature of the atmosphere has risen by almost 1 degree Celsius in the last 200 years. Scientists have called this effect ‘global warming’. They believe that the temperature of the atmosphere will continue to rise as long as the level of carbon dioxide in the atmosphere rises. Increased Greenhouse Effect on Global Warming could shift rainfall patterns, raise the sea level and alter to ecological balance.