Nowadays, large cities are becoming more and more inhabited because of the tendency of the immigration to the city.Urban centers are filled with motorized transport and other sources of pollutants like waste from the large populations of people, or emissions from factories.For a long time, lung cancers, chronic obstructive pulmonary diseases and asthma are just a few diseases common among urban dwellers.Another disadvantage of living in a city is traffic congestion. Every day, many people have to struggle with the transportation jams, who usually face with being late in their office.It is undeniable that the cost of living in big cities is much higher than in countryside. It will be difficult for the poor and workers to live in big cities with a low minimum wage. They seem to struggle with the rapid changes in the price of basic necessities and public services like hospitals, schools,…