Earth . Electromagnetic energy coming from the sun is absorbed by the Earth , which radiates some of this energy outward as infrared energy (heat . Some of this infrared energy escapes into space , but much of it is absorbed by "greenhouse gases " in the lower atmosphere (the troposphere ) and is radiated back to the Earth as heat energy (Bender Leone , 1997 . Studies have proven global warming had already caused a projected sea-level increase from 1990-2100 of 0 .09-0 .88 meters , depending on...











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