Trees are our best friends.Do you know something about trees?
Trees have many advantage and they can help us much.First,trees can stop the wind from browing the earth away.They can also prevent the water from washingthe earth away.So floods and sandstorms can't come into being.Second,trees can make the air fresher and cleaner.It's good for our health.Third,people can take wood,rubber,fruit,medicine and so on from us.
But these year,people have cut down many of them.We should plant more trees instead of cutting trees.In a word,the more trees,the better.