文档介绍：我们只有一个地球
桂山中学高一班黄健媚
We have only one earth
Dear human being,
Have you ever seen such a notice “A black smelly earth with lots of dirty things on it is crying and struggling.”? How terrible it is! Long, long ago, the earth was healthy and beautiful, and it was covered with heavy forest and all kinds of plants. The water in the rivers and lakes and seas was clean and harmless. There were not so many disasters of nature. People lived in harmony with nature, Why has everything changed? Because we human being do a lot of bad things to her. First, We cut down the forests, destroy the grasses, and the water washes away a lot of soil down the rivers into the lakes and seas, making a lot of places flooded and many people killed and making her surface ugly. Secondly, we use lots of chemical powder in the wars, we burn plenty of coals, gas in the factories and cars, making much SO2 and CO2 with the heavy smoke spread in the air, so a lot of people suffer from this terrible air pollution, especially in winter. As a result of this, the temperature of the earth is getting higher and higher. It is dangerous for human being, animals and plants to exist. Thirdly, we pour a lot of waste and poisonous water into the rivers, lakes and seas. Makin
g all kinds of fishes, plants and birds die
Now, if we go on doing bad things to the earth, the earth will die. If the earth died, where would w