文档介绍：CONTENTwhatisglobalwarming?WhatCausesGlobalWarming?humanactivitiesNaturephenomenonWhatareTheEffectsofGlobalWarmingSeaLevelRisethedestructionofmanyimportantecosystemsSolutionstoGlobalWarmingwhatisglobalwarming?GlobalWarmingistheincreaseofEarth',-offchopsticsRecycleasmuchasyoucanreducevehicleemissionsplantingmoretreesandstopfactoriesfromsendingoutwasteair演讲稿。下载可放大。whatisglobalwarming?Globalwarmingisanincreaseintheaveragetemperatureoftheearth'"greenhouseeffect,"inwhichgasessuchascarbondioxidetrapheatwithintheearth'. globalwarming,inbrief,globlawarmingisearth'?hereigivetwotipsforallofyouone,nowadayspeoplebuildallkindsoffactorytomanufatureSinc