The green house effects happen when certain gases known as greenhouse effects  gases collect in earths atmosphere. these gases include carbon dioxide(CO2), methane,nitrousoxide (N2O) , flourinated gases and ozone
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Greenhouse effect is important to keep the surface of the earth warm especially at night but to much of this is destructive. the accumulation of greenhouse gases which are Carbon dioxide, methane, water vapor and ozone keeps the heat from going up to the upper part of the atmosphere thus heat remains near the surface of the earth keeping it warm
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