小学生英语演讲稿：关爱大自然.doc

演讲稿 小学生英语演讲稿：关爱大自然 小学生英语演讲稿：关爱大自然，希望大家喜欢。：竞聘演讲稿国旗下演讲稿开学典礼演讲稿学雷锋演讲稿师德师风演讲稿三分钟演讲稿caringfornature-overpopulationwhatisnature？itseverythingthatexistsintheworldindependentlyofpeople，suchaspantsandanimals，earthandrocks，andtheweather.nowmoreandmorepeoplearefocusingonthenature.itisnodoubtthatthenatureisimportanttoeveryhumanbeing.nonature，nolife.becauseofthesuppliesofthenature，wehavelivedhappilyforalongtime.andwestartedtogaineverythingavailablefromthenature.andthislastedsolongatime.today，peoplehavediscoveredthatthenaturearoundisgettingworseandworse.whatisthreateningthenature？airandwaterpollution，overharvestingofplantandanimalspecies，overpopulationandsoon.overpopulationisthebiggestsourceofpollution.letstakeoverpopulationasanexample.whatdoesoverpopulationfeellike？whenwemoveslowlythroughthecityinatazi.whenweenteracrowdedslumdistrict.whenthetemperatureishighandwhentheairisthickwithdustandsmoke.thestreetsarecrowdedwithpeople.thestreetsseemalivewithpeople.peopleeating.peoplewashing.peopletalking.peoplesleeping.peoplevisitingeachother，arguingandscreaming.peoplerelievingthemselves.peoplepushingtheirhandsthroughthetaxiwindows，begging.peopleleadinganimals.people，people，people，people.aswedriveslowlythroughthecrowd，soundingthetaxishorn，thedust，heat，noiseandcookingfiresmadeitlikeascenefromhell！iadmit，frightening.tothenature，overpopulationisabigproblem.morepeople，morepollution.andthebigpopulationisthreateningthenatureeverysecond.therapidriseinworldpopulationisnotcreatingproblemsonlyforthedevelopingcountries.thewholeworldfacestheproblemthatrawmaterialsarebeingusedupatanincreasingrateandfoodproductioncannotkeepupwiththepopulationincrease.peopleinrichcountriesmaketheheaviestdemandsontheworldsresources，itsfood，fuelandland，andcausethemostpollution.ababybornintheunitedstateswilluseinhislifetime30timesmoreoftheworldsresourcesthanababyborninindia.unlessallthecountriesoftheworldtakeunitedactiontodealwiththepopulationexplosiontherewillbemoreandmorepeoplefightingforashareoflessandlessland，foodandfuel，andthefuturewillbringpoverty，miseryandwartousall.formostofthedevelopingcountries，itisagoodideatocontrolthepopulationgrowth.forexample，chinahascarriedoutbirthcontrolforyears.andthisplanhasagreateffectontheworldpopulation.ifthepopulationcontinuestoincrease，iftheairandwatercontinuetobepolluted，ifwedontdosomethingtoprotectwild-plantandwildlifespecieswillbedeclining.speciesandbiologicalmunitieshavedifficultyadaptingtochange.economicopportunitiesandthequalityoflifeoffuturegenerationsarealsoputatrisk.byprotectingnature，weprotectourselves.letsunitetogether，handinhandwestandallacross