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Inthelastseveraldecades,ourearthhasbeenextremelypolluted,suchasairpollution,waterpollution,noisepollutionandsoon.Inrecentyears,theextremeweatherbeesmoreandmorefrequent.Wintergetscolderandsummerbeeshotteranditrainsmorefrequently.Allofthesewarnusthatprotectingtheenvironmentisaseriousandemergentevent.Asourgeneralpeople,weshouldbuildproperlifestyle.Weshouldpayattentiontowaterandlightsaving.Whenwegoout,weshouldfirstlychoosethepublictransportation.Themostimportantisthatwemustrealizethatwecandoalotofthingstoprotectourenvironment.It'sourdutytomakeourhomebetter.Let’schangefromourselves.