Wherever there is little or no industrial development.
Such examples would be northern Canada, Antarctica, and the North Pole.
Uruguay is between the 20 countries with lowest air pollution. :)
Tennesee and Alabama are tied.
The world is pollution free.
As you live you life try not to make or be the cause of pollution - this will help the world.
everywhere has pollution no matter where you are in the world you will have pollution. Cars have lots of gases and that creates pollution. So yes puerto rico does have pollution.
Pollution is a very serious problem in our world.
Australia is the lowest/flattest continent in the world.
100 percent of the world is affected by air pollution. Air pollution is not limited to one country or one area, it spreads all over the world.
the WORLD!!!!
Japan has the lowest birth rate in the world.
There is pollution in every river in the world.
Almost as many as other countries of the world has. No Difference in the Types of Pollution anywhere in the World.