文档介绍：英语演讲稿-关爱大自然主题CaringForNature--OverpopulationWhatisnature?It’severythingthatexistsintheworldindependentlyofpeople,suchaspantsandanimals,earthandrocks,andtheweather。Nowmoreandmorepeoplearefocusingonthenature。Itisnodoubtthatthenatureisimportanttoeveryhumanbeing。Nonature,nolife。Becauseofthesuppliesofthenature,wehavelivedhappilyforalongtime。Andwestartedtogaineverythingavailablefromthenature。Andthislastedsolongatime。Today,peoplehavediscoveredthatthenaturearoundisgettingworseandworse。Whatisthreateningthenature?Airandwaterpollution,overharvestingofplantandanimalspecies,overpopulationandsoon。Overpopulationisthebiggestsourceofpollution。Let’stakeoverpopulationasanexample。Whatdoesoverpopulationfeellike?Whenwemoveslowlythroughthecityinatazi。Whenweenteracrowdedslumdistrict。Whenthetemperatureishighandwhentheairisthickwithdustandsmoke。Thestreetsarecrowdedwithpeople。Thestreetsseemalivewithpeople。Peopleeating。Peoplewashing。Peopletalking。Peoplesleeping。Peoplevisitingeachother,arguingandscreaming。Peoplerelievingthemselves。Peoplepushingtheirhandsthroughthetaxiwindows,begging。Peopleleadinganimals。People,people,people,people。Aswedriveslowlythroughthecrowd,soundingthetaxi’shorn,thedust,heat,noiseandcookingfiresmadeitlikeascenefromhell!Iadmit,frightening。Tothenature,overpopulationisabigproblem。Morepeople,morepollution。Andthebigpopulationisthreateningthenatureeverysecond。Therapidriseinworldpopulationisnotcreatingproblemsonlyforthedevelopingcountries。Thewholeworldfacestheproblemthatrawmaterialsarebeingusedupatanincreasingrateandfoodproductioncannotkeepupwiththepopulationincrease。Peopleinrichcountriesmaketheheaviestdemandsontheworld’sresources,itsfood,fuelandland,andcausethemostpollution。AbabybornintheUnitedStateswilluseinhislifetime30timesmoreoftheworld’sresourcesthanababyborninIndia。Unlessallthecountriesoftheworldtakeunitedactiontodealwiththepopulationexplosiontherewillbemoreandmorepeoplefightingforashareoflessandlessland,foodandfuel,andthefuturewillbringpoverty,miseryandwartousall。Formostof