We people live in the urban world and at the mid of 21th century more than 3 billion people lived in the urban areas which is almost half of the total population of the world.

1.       We people live in the urban world and at the mid of 21th century more than 3 billion people lived in the urban areas which is almost half of the total population of the world. According to approximate estimations the world population will be round about 5 billion after 15 to 20 years later will enhance the problems. The mostly change will occur in developed areas of world in which all facilities. People will migrate to these developed areas because of attraction of cities.  Urbanization has attraction of facilities which insist the people to migrate toward cities.