inition:??Theso-calledgreenhouseeffectisshort-wavesolarradiationthroughtheatmosphereintotheground,andwarmingthegroundafterthelengthofradiationbeingreleasedintheatmospherebyabsorbingcarbondioxideandothersubstances,therebycreatingtheeffectofatmosphericwarming,justlikethegreenhouse’seffectonplants.greenhousegas:Carbondioxideisnottheonlygreenhousegas.Othergases,suchasmethane(CH4)andnitrous(氮的、硝的)oxide(NO),areevenstrongerinfrared(红外线的)absorbers.IftheEarthhadnogreenhouseeffect,itsaveragesurfacetemperaturewouldbeverylowofabout-18°fortable15°Cfoundtoday.ThenaturalgreenhouseeffectisessentialformaintainingthepropertemperatureneededtosustainlifeonEarth.Whatisgreenhouseeffect?Man-madeHowDoWeHumanBeingsContributetotheGreenhouseEffect??WhereDoWeReleaseGreenhouseGases?Burningnaturalgasandcoalindailylife.
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