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Cla 11Elena(18)Traffic is a big source of pollution in cities
The environment has been getting worse and worse for many years.As the world is getting more densely populated, pollution presents a severe problem.We have to admit that, comparatively speaking, our cities are not so clean and green as those in the developed countries.And the traffic problem has become a big source of pollution in cities.Cars play an important role in modern society.It has created a lot of serious problems in our society.Modern transportation revolves around cars.People drive everywhere, to the store, to work, to school.Everybody wants they have their own car.In recent years, with the growth of family income, more and more people are able to afford private cars.All the time, they are pumping huge amounts of waste gases into the atmosphere.Cars are responsible for a part of air pollution in the cities.These gases are very harmful, causing disease and even death.And the noise pollution from the traffic also affect the cities.What's more, with the rapid increase of private cars, and people who drive the cars don't obey the traffic rules.Traffic jams made the air pollution and noise pollution worse and worse.So traffic has become a big source of pollution in cities.
