- Over70%oftheEarth’ssurfaceiswater;waterisobviouslythemostpreciousnaturalresourcethatexistsonourplanet.Withoutwater,lifeonEarthwouldbenon-existent.Wateristhelifebloodoftheenvironment,essentialtothesurvivalofalllivingthings-plants,animals,andhuman.Alt...
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- Therearestillmanyproblemsofenvironmentalprotectioninrecentyears。Oneofthemostseriousproblemsistheseriouspollutionofair,waterandsoil。thepollutedairdoesgreatharmtopeople’shealth。Thepollutedwatercausesdiseasesanddeath。Whatismore,vegetationhadbeengreat...
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- Oncemandidnothavetothinkabouttheprotectionofhisenvironment.Therewerefewpeopleontheearth,andnaturalresourcesseemedtobeunlimited.Todaythingsaredifferent.Theworldhasbecometoocrowded.Weareusingupournaturalresources,andpollutingourenvironmentwithdangerous...
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- WhenIwasakid,theriverisveryclearandbeautifulsoIalwaysgoswimmingandfishing.Recently,Idiscoverthattherearemoreandmoregarbageinhere.Garbagedoesn’treduceeventhoughsomepeoplewillingtothrowthatintothetrash.Itisnotonlyaffectshumanhealthbutalsodestroys...
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- Throughouthistorymanhaschangedhisphysicalenvironmentinordertoimprovehiswayoflife.Withthetoolsoftechnologyhehasalteredmanyphysicalfeaturesoftheearth.Hehastransformedwoodlandsandprairiesintofarmsandmadelakesandreserviorsoutofriversforirrigationpurposes...
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