Nowdays there are many types of pollution. But air pollution is the biggest problem in the world. There are two manjor reasons why the atmosphere is polluted. First means of transport is one of the largest exhaust producers. Second there are waste materials from factories. Air pollution can lead to pneumoria, possibly even lung cancer and affect lives. In conclution, air pollution is very dangerous so we should protect our environment.

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@jg

In all over, people have to face with lots of types of pollution. But air pollution is the biggest problem. In Viet Nam and some countries, people have to work hard to improve the air, but the air could not improve very much because of it really really polluted by the pollution of the factories come out. In Ha Noi- the capital of Viet Nam, some days usually has air emissions are at a very high threshold. But how can we improve that problem? We can improve the air emission by filter the exhaust gas before discharge, build factories far from the cities. Some people will have this question: "How can I protect myself is I am living in the place which has air polution?". And the answer forr this question is, you have to we your mask when you go out of your house, do exercises in the morning to keep fit, eat more vegetables to have a balance life.