In many cities around the world pollution levels have risen in recent years. Why are some cities becoming more polluted? What effects does this have?

Recently, pollution levels have increased in many cities all over the world. Development of economy and population are the main reasons, which cause worse pollution. As a result, there are serious effects on human well-being and the environment. A lot of places are getting more polluted, especially in morden cities, because of overpopulation and too […]