Currntly,my school is launching an activity whos thm is that actions chang th world to advocat th low carbon living. In th activity,w ar rquird to go to school or som othr plac by bik or by foot as much as possibl instad of by bus.And whn th Christmas coms,snding -grting cards instad of tridional cards of which ar mad of wood as w know.Bsids,w should us both sids of vry pic of papr and w should sav watr as wll as lctricity. I bliv that only w do thus can w hav a bttr living nvironmnt.