With the development of the modern society ,the natural environment has changed a lot .

Around the world, people have cut down millions of trees .When the wind blows ,the earth is taken away. Many peopel usually throw litter around and many chemical factories pour waste water into the rivers.

I think we should stop destroying our earth. We had better stop cutting down forests. We should keep rivers clean. Factories must stop pouring dirty water into the rivers. We should sort the garbage.

If we do not stop destorying the earth ,we will die out one day .So we should protect the environment .We had better stop destroying our earth .