As you can see the transportation pollutes most of all. This is because there are millions of cars on the motor ways, roads and streets everyday. I have been in Mexico my self and when I got there I fell asleep of the pollution in Mexico City. Because of this only people that can afford covers or gas masks survive if they live there for a long time. People who can’t afford usually get Cancer or other diseases. The 3 presented one (industry) are actually a very big thing. It still pollutes very much. These things destroy the Ozone layer very much and this allows the sunbeam to enter past the atmosphere into the earth and may strike people.