There are many disadvantages to living in a large city, air pollution is one of the most serious problems. Firstly, air pollution caused by factories in the city. Big cities attract more investment capital from inside and outside so the number of factories is increasing rapidly. This makes the air extremely polluted by dust from factories. Second, there are too many means to aggravate this problem. Car and motorcycle emissions are one of the causes of air pollution. In conclusion, air pollution, contributing to more and more people suffering from dangerous diseases such as lung cancer, tuberculosis, ... is a major limitation of the city life.
