人類(lèi)和環(huán)境ManandHisEnvironment(大學(xué)英語(yǔ)作文)

1、人類(lèi)和環(huán)境ManandHisEnvironment大學(xué)英語(yǔ)作文Throughouthistorymanhaschangedhisphysicalenvironmentinordertoimprovehiswayoflife.Withthetoolsoftechnologyhehasalteredmanyphysicalfeaturesoftheearth.縱觀歷史，改善自己的生活方式，人類(lèi)已經(jīng)改變了自然環(huán)境。人類(lèi)借助技術(shù)工具改變了地球上的許多自然特征。Hehastransformedwoodlandsandprairiesintofarmsandmadelakesandreserviorsou

2、tofriversforirrigationpurposesorhydroelectricpower.Manhasalsomodifiedthefaceoftheearthbydrainingmarshesandcuttingthroughmountainstobuildroadsandrailways.However,man'schangestothephysicalenvironmenthavenotalwayshadbeneficialresults.Today,pollutionoftheairandwaterisanincreasingdangertothehealthoft

3、heplanet.Eachdaythousandsoftonsofgasescomeoutoftheexhaustsofmotorvehicles.Smokefromfactoriespollutestheairofindustrializedareasandthesurroundingareasofthecountryside.Thepollutionofwaterisequallyharmful.Thewholeecologicalbalaneeoftheseaisbeingchangedandindustrialwasteshavealreadymademanyriverslifeles

4、s.Nowenvironmentalprotectionismorepressingthaneverbefore.Asweknow,massivedestructionofenvironmenthasbroughtaboutnegativeeffectsandevenposesagreatthreattoman'sexistenee.人類(lèi)將林地和草原改造成農(nóng)田，河流湖泊和水庫(kù)里面的水用于灌溉和水力發(fā)電。人類(lèi)還通過(guò)排干沼澤和開(kāi)山修建公路和鐵路來(lái)改變地球的面貌。但是人類(lèi)對(duì)自然環(huán)境的改變并不總是帶來(lái)有益的結(jié)果。今天，空氣污染和水污染越來(lái)越威脅到地球的健康。每天，成千上萬(wàn)噸廢氣從車(chē)輛的排氣管排

5、出。工廠釋放的煙霧污染了工業(yè)區(qū)的空氣和周?chē)l(xiāng)村。水污染也是同樣的有害。整個(gè)海洋生態(tài)平衡正在改變，工業(yè)廢水已使許多河流死氣沉沉。現(xiàn)在，環(huán)境保護(hù)比以往任何時(shí)候都更緊迫。我們都知道，環(huán)境的巨大破壞已帶來(lái)負(fù)面影響，甚至對(duì)人類(lèi)生存帶來(lái)巨大的威脅。Indiffereneetotheseproblemswillmeancommittingsuicide.Therefore,effectivemeasuresshouldbetakenandlawspassedtoconserveenvironment.Otherwise,maniscertaintosufferfromtheseriousconsequencescausedbythislackofcareforhislivingsurro