Watr is important,not only to th human bings,but also to all th craturs.W dar say all of th livs cannot surviv without watr.What maks us mor and mor worrid is that watr on our plant is bcoming lss and lss.Bsids,w hav to b facd with th watr pollution. It is rally a big problm. In ordr to liv on this plant,w human bings should dal with th problm sriously. vryon should do his bst to sav and protct watr sourc.