Keep water Resources

waterisimportant，notonlytothehumanbeings，butalsotoallthecreatures。wedaresayallofthelivescannotsurvivewithoutwater。whatmakesusmoreandmoreworriedisthatwateronourplanetisbecominglessandless。besides，wehavetobefacedwiththewaterpollution。itisreallyabigproblem。inordertoliveonthisplanet，wehumanbeingsshoulddealwiththeproblemseriously。everyoneshoulddohisbesttosaveandprotectwatersource。