Monday, December 7, 2009

Water cyle

Water cycle involves evaporation, condensation, precipitation, and collection. Evaporation occurs when the sun heats up the water and turns it into vapor. After that condensation occurs when the vapor is exposed to cold air and is converted to water. Next, when so much water accumulates in the in the air in the form of clouds, the water precipitates because the air cannot hold it any longer. Finally, the water is returned back to the ground or water bodies. Then cyle continues all over again.
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