Yes, we have. We often collect the garbage and sweep up our school yard. Our school clean up the city streets, especially on days before great national holidaysHave you ever done anything similar? If yes, what did you do? Where did you do it?If the pollution continues, what might happen?If the pollution continues, our world become harmful and unpleasant place to liveIf air pollution continues, we would be in big trouble. Especially without trees. Trees and plants take in carbon dioxide (eg. factories and when we breathe out) and provides us oxygen, which is the reason why we can breathe. But when we cut down trees and destroy plants, nothing will catch the carbon dioxide and it would just get trapped in the Earth's atmosphere. The carbon dioxide in the atmosphere would make Earth get hotter and hotter. Yes, global warming. And not only that, it would be very difficult to breathe if air pollution gets worse and worse. What should we do to keep the environment clean
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