howtofacethechallengeYesterday,wedidn'thavecars.buttodaywehave.yesterday,wedidn'thavetvsets.buttodaywehave.Yesterdaywedidn'thavecomputers.buttodaywehave.duringthehundredsofyears,howfasttheworldhaschanged!That'sreallyamyth.Thoughthenewworldbringsusaconvenientlife.Italsobringsmoreproblems.Forexample,population,resources,environmentandsoon.Weknowthattheworld'spopulationisgrowingfasterandfaster.It'smorethan6billionnow.It'saverybignumber.Wecansaythenumberofworld'spopulationislikethenumberofthestarsintheuniverse.andifitgoesonlikethat,Ican'timagewhatwillhappen.Asthesecondproblem,theworldisshortofresourcesnow.Indailylife,weneedwater,rockoil,coalandotherthings.Dayafterday,theresourcesdisappearfast.andtheywon'tappear.becausemostofthemarenotrenewableresources.Thethirdproblemisenvironment.everyonetalksaboutit.Theweatherishotterandhotter.Thatmeanswepollutetheenvironmentseriously.Ourcarsmaketheairdirty.Oldbatteriesmakethesoilpoisonous.Wastewatermakescleanwaterdirty.Sowedon'thavefreshair,fecundsoilandpurewater.oh,no.stoppolluting!Nowwehumanbeingsshouldfacethenewchallenge.Wemustthinkmoreaboutourmotherearth.Remember:wedon'thaveanotherearth!

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