treesareveryinportantforus.whentheyarealive,theygiveusO2andgiveusgoodmood.insummer,theycanshieldtheshiningandmakepeoplefeelcool.
aftertheydead,wecanmakedeskchair,pencilsandsoon.wecanseethethingsmakeofwoodeverywell.
somepeoplealsousewoodtogetfireforcooking.
butnow,therearelessandlesstreesonearth.ourenvironmentbecomeworseandworse.ifwedonotprotecttrees,oneday,therewillbenotreesonearthbutseed.