howtoprotectourenvironmrnt

　　Asamodernschoolstudents.Weallknowenvironmentisveryimportantinourdailylife.

　　but,doyouknowhowtoproctectenvironment?

　　first,weshouldkeepourschoolyardcleanandtidy.second,weshouldn'tdropthelitterhereorthere.Third,weshouldgotoschoolbybikeoronfoot.Fourth,weshouldturnoffthelightsandtvwhenweleavehome.Fifth,weshouldn'tspitinpublic.Ontheonehandweshouldn'tcutdowntreeswithoutpermission.Ontheotherhandweshouldplanttreesinspringasmanyaspossible.

　　Ifwetryourbest,i'msureourenvionmentcangetbetterandbetter!

　　ourearthisindanger

　　Wehaveonlyoneearth.Butnowourhomeisindanger,weshoulddoourbesttoprotect.

　　Firstly,thelandisdamagedmostlybydeforestation,(whichisthecuttingdownoftrees.)Overgrazingbycattleandlivestock,especiallyonlandswithfeworlittleraincoupledwithstrongwinds,isoneofthefactorsthatwillresultinmorearidlandscapes.

　　Secondly.theairispollutedbyemissionslikesmokeandotherpollutantsfromfactories,powerstations,andvehicleslikecars.Especiallyintheindustrialareas,theseareharmfultohumanhealthandtotheatmosphere.

　　Lastly,wastedischargefromfactoriesandcitiesintowatersdirectlywithoutbeingtreatedfirst,isamajorsourceofwaterpollution.