Weliveontheearthanddependonmanykindsofnaturalresources.Buttheseresourcesareverylimitedsoweshouldtrytosavethem.Forexample,inourdailylifeweshouldturnoffthetapwhenwefinishusingwater.Don'thavethewaterrunningwhenwewashfaceorbrushteeth.Besides,weshouldmakeproperuseofpaper.Weshouldwriteonbothsidesandwehadbettersendourusedbookstothejuniorstudents.Inthatcasewecansavemanytrees.Andthenweshouldformagoodhabitofsavingelectricty.Remembertoturnofflightswhenweleave.Don'tturnonlightsunlessitistoodark.Finallyweshouldridebikesinsteadofbybusorbycarstosavegas.Ithinkonlyinthatwaycanwehavemorenaturalresourcesforthefutureuse.