Seeing this picture, we know that these trees have been cut down. But as a very little baby in the picture, he must be puzzled. He will ask: What are these? Are these trees? Of course, in our imagination, trees must be tall, strong and green enough. Actually, his question shows humans a problem that is worth thinking about. The covering rate of the forest in the world has kept decreasing these years and it caused a lot of problems on environment. As we all know, trees are very important in our life. They can make the air fresher, reduce natural disasters and soon. So I appeal: Don't cut down trees. Let' s make our earth greener for our later generation. Don't let the children think trees are only roots!
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