a world without trees
can you imagine if there were without trees in the world there would be back to centuries ago when there were just lower plant without any others .we all know that trees can purify underground water and covert carbon dioxide to oxygenen.
nowadays more and more people in order to get the profit pay no attention to the enviroment and know little about the function of trees.now let us do something to our enviroment by now .
every year we have a day to plant tree,not just the day we but everyday if we have time we should do .
好久没写作文了.谢你这次给的机会啊!