Nowdays cities in the world are getting bigger and bigger. It makes many kind of problem like pollution, high living cost, heavy traffic and crime. I am going to elucidate these problems and suggest what it can be done.
First of all, Pollution is one of the biggest problem in the urban problems. Because it makes people suffer from variety kind of diseases. for example, there are a plenty of car in cities. It occurs air pollution. Air pollution brings sore throat and lung disease.
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