环保英语演讲稿范文:Only One Earth We have only one earth. But now,the environment becomes worse and worse.
As you know,there's no enough clean water for people. So many of them lose their lives because of water. In a lot of countries, people have to cut trees for living. So there's nothing to keep water from running away. Also we have polluted the land, the river and the air. So we have to..