The air pollution is so dangerous for people in my area. There are two problems about causes and effects. About causes, firstly, many vehicles discharge dust and smoke into the environment. Besides, factories dump waste poison out. Finally, people littering anywhere, such as parks, beaches, schools and even on the way. About effects, firstly, people can suffer from many respiratory diseases. Second, people can't live long because of lack of oxygen. And last, it will destroy the ozone layer and make it easier for the Sun rays to penetrate the Earth. In short, I think we should protect the air's purity before it's too late. 

At present, the environment is very polluted. The cause of environmental pollution is waste from factories, vehicles and even waste from human activities. Environmental pollution also depends in part on the will of man. The consequence that it leaves is the effect of air pollution on human health, causing diseases to the human body. In addition, it also kills aquatic creatures, polluting and depleting water sources.

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