unit10课件
日期：2010-11-28 11:32
protectingtheenvironment(byrecyclingandreusing)，factories，etcTherearealsoseveralendangeredbirds，theAsianelephant，theblackrhino，ifnewspeciesarriveandifaspeciesisoverusedorhuntedOtherfactorsincludediseaseandpollution2Ifanimalsandplantsdieout，creatingnewhabitats，fishes，controllingexportandimportofanimalsandplantsandbylearningmoreaboutanimalsandtheenviron-mentAirpollutioncars，thegorilla，thebluewhale，thesnowleopard，Warmingup:PossibleanswerstothequestionsonP641TheyincludetheAfricanelephant，wewillnotbeabletosurviveAllanimalsandplantshavespecificfunctionsandarenecessa-ryifwewanthealthyecosystemsWeneedthemformedicalandcommercialpurposesWealsohaveamoralresponsibili-tytomakesurethatwedon’tcauseotheranimalsandplantstodieoutbecauseofourdominanceontheplanet3Wecanhelpendangeredanimalsbyprotectingtheirhabitats，andotherani-malsTheybecomeendangerediftheirhabitatisdestroyedorchanged，bur-ningcoalandoilVariousanswersWaterpollutionfactoriesanddrainageWecan’tuseordrinkthewater，
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