1 Life in a big city has become more and more difficult for people to cope with. 2 In a big city, stress is caused by fierce competition. 3 Different kinds of public transport makes it convenient for people to go out . 4 Travel in rush hours can be a real headache. 5 Pollution of various kind is the result of industrialization. 6 Cars spew toxic fumes into the atmosphere. 7 Noise bellows out from every side. 8 Beautiful parks provide citizens places for doing exercise and entertainment. 9 All these factors add to the pressure of daily existence in a big town.