This is my presentation about air pollution.
As you can see in areas of South America and Australia there is less pollution because there is a lot of jungles in those areas.
In north America and Scandinavia there is a lot of places that no one live there so no much air pollution.
But in China Europe and Asia there is a lot of factories and no so much empty place to live.
It happened when the air contains gases and dust in harmful amounts.
The effects from air pollution are
Long term:Respiratory infections, heart disease, stroke and lung cancer
Short term: difficulty in breathing, wheezing, coughing, and asthma
Why is hepend?
There is 2 Reasons
gas from motor vehicle