环境保护(英文版)教学提纲.ppt

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1、EnvironmentalProtectionEnvironmentisthethingsaroundthecenterofthingsWhatishappeningontheeartheverysecond●2.4Neonatesbornintheworld.●extracted28.6tonsofmetal.●produce1.3cars.●CO2emissionsof760tonsworldwide.●Decreaseof0.6squarekilometersforest.Theworld'stoptenenvironmentalproblems◆1.Glob

2、alwarming---全球变暖◆2.Ozonelayerdepletion---臭氧层破坏◆3.Lossofbiodiversity---生物多样性减少◆4.Thespreadofacidrain---酸雨蔓延◆5.Forestdropped---森林锐减◆6.Desertification---土地荒漠化◆7.Airpollution---大气污染◆8.Waterpollution---水体污染◆9.Marinepollution---海洋污染◆10.Cross-boundarymovementsofpoisonouswastes---毒性废弃物越境转移NO.1

3、Globalwarming◆Graduallyincreasingthegreenhouseeffect,Earth'stemperaturerising.◆Mainhazards(危害):abnormalweather,speciesextinction,thesealevelrising.◆Ozone(O3)layer:theEarth'sprotectivelayer◆Mainhazards:strongUV(ultra-violetray紫外线)radiationcandamageimmunesystem（免疫系统）ofhumannaturesandanim

4、als,causeskincancerandcataracts（白内障）,damagetotheearth’secosystems（全球生态系统）.NO.2OzonelayerdepletionNO.3LossofbiodiversityNO.4Thespreadofacidrain◆Globalextinctionof50,000species/year,140/dayonaverage.◆pH<5.6referredasacidrain.◆Mainhazards:Waterandsoilacidification(酸化),plantandanimaldeath,

5、corrosion(腐蚀)buildings,railwaysandbridgesandotherfacilities.NO.5ForestdroppedNO.6Desertification◆Hugenumbersofglobaldeforestation.◆600millionsquarekilometersoflandintodeserteachyear.NO.7Airpollution◆Sulfideandnitrogenoxides(硫化物和氮氧化合物)intotheatmosphereworldwideupto30milliontonseachyear.

6、NO.8Waterpollution◆About40%oftheworld’sriversareseriouslypolluted.◆Freshwater（淡水）resourcesarebecomingexhausted.NO.9MarinepollutionNO.10Cross-boundarymovementsofpoisonouswastes◆Hundredsoftonsofsiltandwaste(淤泥和废弃物)intothecoastalwatersannually.◆Toxicwaste-inducedcancers.EnvironmentalProbl

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