这篇是关于世界人口的 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. Formostofthedevelopingcountries,itisagoodideatocontrolthepopulationgrowth.Forexample,Chinahascarriedoutbirthcontrolforyears.Andthisplanhasagreateffectontheworldpopulation. Ifthepopulationcontinuestoincrease,iftheairandwatercontinuetobepolluted,ifwedon'tdosomethingtoprotectwild-plantandwildlifespecieswillbedeclining.Speciesandbiologicalcommunitieshavedifficultyadaptingtochange.Economicopportunitiesandthequalityoflifeoffuturegenerationsarealsoputatrisk.Byprotectingnature,weprotectourselves. Let'sunitetogether,handinhandwestandallacrosstheland. Wecanmakethisworldinwhichtolive.Handinhand.Controlthepopulationgrowth.Takegoodcareofournature.