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发表于:2016-11-25
Oncemandidnothavetothinkabouttheprotectionofhisenvironment.Therewerefewpeopleontheearth,andnaturalresourcesseemedtobeunlimited.Todaythingsaredifferent.Theworldhasbecometo...
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发表于:2016-11-24
Throughouthistorymanhaschangedhisphysicalenvironmentinordertoimprovehiswayoflife.Withthetoolsoftechnologyhehasalteredmanyphysicalfeaturesoftheearth.Hehastransformedwoodla...
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发表于:2016-07-03
Therearestillmanyproblemsofenvironmentalprotectioninrecentyears。Oneofthemostseriousproblemsistheseriouspollutionofair,waterandsoil。thepollutedairdoesgreatharmtopeople’s...
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发表于:2017-06-28
WhenIwasakid,theriverisveryclearandbeautifulsoIalwaysgoswimmingandfishing.Recently,Idiscoverthattherearemoreandmoregarbageinhere.Garbagedoesn’treduceeventhoughsomep...
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发表于:2016-10-16
Over70%oftheEarth’ssurfaceiswater;waterisobviouslythemostpreciousnaturalresourcethatexistsonourplanet.Withoutwater,lifeonEarthwouldbenon-existent.Wateristhelifebloodofth...