作文一 ProtectionoftheEnvironment Oncemandidnothavetothinkabouttheprotectionofhisenvironment。Therewerefewpeopleontheearth，andnaturalresourcesseemedtobeunlimited。 Todaythingsaredifferent。Theworldhasbecometoocrowded。Weareusingupournaturalresources，andpollutingourenvironmentwithdangerouschemicals。Ifwecontinuetodothis，humanlifeonearthwillnotsurvive。 Werealizethatiftoomanyfisharetakenfromthesea，therewillsoonbenoneleft。Yet，withmodernfishingmethods，moreandmorefisharecaught。Weknowthatiftoomanytreesarecutdown，forestswilldisappear。Yet，wecontinuetousepowerfulmachinestocutdownmoreandmoretrees。Weseethatifriversarepollutedwithwasteproducts，wewilldie。Yet，wasteproductsare stillputintorivers。 Weknowthatifthepopulationcontinuestoriseatthepresentrate，inafewyears，therewontbeenoughfood。Whatcanwedotosolvetheseproblems？ Ifweeatmorevegetablesandlessmeat，therewillbemorefoodavailable。Landforcropsfeedsfivetimesmorepeoplethanlandwhereanimalsarekept。 Ournaturalresourceswilllastlongerifwelearntorecyciethem。 Theworldpopulationwillnotrisesoquicklyifpeopleusemodernmethodsofbirthcontrol。 Finally，ifweeducatepeopletothinkabouttheproblemsweshallhaveabetterandcleanerplanetinthefuture。 作文二 ManandHisEnvironment Throughouthistorymanhaschangedhisphysicalenvironmentinordertoimprovehiswayoflife。Withthetoolsoftechnologyhehasalteredmanyphysicalfeaturesoftheearth。Hehastransformedwoodlandsandprairiesintofarmsandmadelakesandreserviorsoutofriversforirrigationpurposesorhydroelectricpower。Manhasalsomodifiedthefaceoftheearthbydrainingmarshesandcuttingthroughmountainstobuildroadsandrailways。 However，man39；schangestothephysicalenvironmenthavenotalwayshadbeneficialresults。Today，pollutionoftheairandwaterisanincreasingdangertothehealthoftheplanet。Eachdaythousandsoftonsofgasescomeoutoftheexhaustsofmotorvehicles。Smokefromfactoriespollutestheairofindustrializedareasandthesurroundingareasofthecountryside。Thepollutionofwaterisequallyharmful。Thewholeecologicalbalanceoftheseaisbeingchangedandindustrialwasteshavealreadymademanyriverslifeless。 Nowenvironmentalprotectionismorepressingthaneverbefore。Asweknow，massivedestructionofenvironmenthasbroughtaboutnegativeeffectsandevenposesagreatthreattoman39；sexistence。Indifferencetotheseproblemswillmeancommittingsuicide。Therefore，effectivemeasuresshouldbetakenandlawspassedtoconserveenvironment。Otherwise，maniscertaintosufferfromtheseriousconsequencescausedbythislackofcareforhislivingsurroundings。 作文三 Manypeopleareactiveinfightingagainstunfairtreatmenttocoloredpeople，women，animalsandsoon。RightnowIamtalkingaboutfightingforrespecttoourenvironment。Thoughtheenvironmentdoesn’thaveamouthtodeprecatewhathumanshavedonetoher，sheretaliatesthroughaction。IntheearlyyearstheChinesecutdownlargequantitiesoftrees，atthesourceoftheyellowriver，whichledtothedisappearanceofbigforestsandterriblefloods。 Asaresult，theHuangtuplateauwhichwasoncecoveredwithgrassandforestswasturnedintobarrensthatsupportedfewerplants。Anotherexamplewasinseveraldevelopedcountries。Becausemanychemicalfactoriesdischargedpoisonousgaswithoutfilteringit，citieswerecoveredwithsomuchpoisonousgasthatpeoplewerekilledbytheairtheybreathedin。Whathorriblescene！Whatwearesufferingisonlyasmallpartofwhatthenatureoncesuffered。Ifwedon’ttakeactiontoshowrespecttotheenvironment，wewillhavetofaceanincreasinglyawfulsituation。Measuresshouldbetakentoprotecttheenvironmentonwhichwearerelying。 Firstgovernmentsshouldforbiddestroyingvegetation，riversandlakes，oceans，asandtheatmosphereaswell。Secondvoicesshouldbemadetoannouncethepublicoftheimportanceofprotectingtheenvironment。Thirdenterprisesshouldpayspecialattentiontotheeffecttheyhaveontheenvironmentandworkoutsolutionsfortheproblems。Onlybychangingthewaywetreattheenvironmentcanwegetalongwellwithit。Onlybysavingtheenvironmentcanwesaveourselves。
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