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1、Unit2Listening1TourGuide:OK,everyon巳here'sournextexhibit・Doyouseethebodyofthelittlebirdinthatbottle?Thatisaduskyseasidesparrow.ItwasanoldmalethatdiedonJune16,1987・lt〃skindofsadbecausehewastheverylastduskyseasidesparrowintheworld・They'renowextinet.Yes,youhaveaq
2、uestion?Male:Doyouknowwhytheybecameextinet?TourGuide:Basically,theylosttheirhabitat・See,theduskyseasidesparrowlivedonlyinoneplace—onMerrittIslandinFlorida・Theislandhadalotofmosquitoesandwetlands・ThepeopleonMerrittIslandusedchemicalstokillthemosquitoes.TourGuid
3、e:Thosechemicalswerealsoveryharmfultothesparrows,andmanydied.Inaddition,thepeopleonMerrittIslandtriedtocontrolandexploitthewetlands.Astheyalteredthem,thewetlandswerenoIongeragoodhabitatforthesparrows・Thebirdsdiedonebyoneuntilthereweren'tanyleft.Female:So,ifpeo
4、pleweretoblame,can'twemakesuresomethinglikethatneverhappensagain?TourGuide:We'retrying.Thesituationwiththeduskyseasidesparrowmakesonethingveryclear.Weneedtoprotectendangeredanimals・However;it'sabetterstrategytoprotecttheanimalsandtheirhabitats,too.Afterall,ifa
5、nanImai'shabitatisdestroyed,theanimalwilllikelybecomeextinct・TourGuide:We'retrying.Thesituationwiththeduskyseasidesparrowmakesonethingveryclear.Weneedtoprotectendangeredanimals・However;it'sabetterstrategytoprotecttheanimalsandtheirhabitats,too.Afterall,ifananI
6、mai'shabitatisdestroyed,theanimalwilllikelybecomeextinet.That'swhytheEndangeredSpeciesAct,whichwaspassedintheUnitedStatesin1973,protectsbothendangeredanimalsandtheirhabitats・Forexample,thesteelheadtroutlivesinriversandstreamsonthewestcoastoftheUnitedStates—the
7、ColumbiaRiverinWashingtonstateforinstanee.Recently,boththefishandtherivercameundertheprotect!onoftheEndangeredSpeciesAct.Male:Buthowcanweprotectlargeareassuchasriversandforests?Noone—noteventhegovernment—canaffordtobuyorcontrolallthelandthatendangeredspeciesli
8、veon.TourGuide:Goodpoint.Infact,that'swhatmakestheEndangeredSpeciesActdifficulttofullyenforce・There'sanongoingconflictbetweensomeIandownersandthegovernment・Takethecaseofthegraywolf
