Waterisveryimportantforlivingthings.Withoutwatertherecanbenolifeonearth.Allanimalsandplantsneedwater.. 　　Waterisfoundatmosteverywhere.Eveninthedriestpartoftheworldthereissomewaterintheair. 　　Waterisveryimportantforlivingthings.Withoutwatertherecanbenolifeonearth.Allanimalsandplantsneedwater.Manalsoneedswater. 　　Waterisfoundatmosteverywhere.Eveninthedriestpartoftheworldthereissomewaterintheair. 　　Asweallhavefoundout,watermaybeasolid,oraliquidoragas.Whenitisasolid,itmaybeashardasbrick,Whenitisaliquid,youcanpouritoutofacontainer.Whenitisagas,youcannotseeorfeelit. 　　Althoughabout70percentoftheearth'ssurfaceiscoveredwithwater,therearemanyplacesintheworldstillrunningoutofwater.Soweshouldmakegooduseofwateronearth.