Air pollution is also caused in towns and villages, but alot is in cities because of factories, cars e.t.c.
Beijing in China.
The city of Los Angeles is generally considered to have America's worst air pollution problem. Most of California's metro areas have bad air pollution.
christchurch
air pollution travels in the air
Air pollution would be the most concerning factor.
indirect relationship
As of currently, the city of Delhi in India ranks among the world's most polluted cities, with high levels of air pollution caused by factors such as vehicle emissions, industrial activities, and crop burning. Other cities known for significant air pollution include Beijing in China and Lahore in Pakistan.
sex
Humans create the most air pollution. Power plants are known to create the most pollution in most areas of the world.
Air is technically cleaner in the country side as most of the smog/pollution comes from factories, etc. Most of these factories are located in urban areas (city areas) due to closer access to the city. The smog spreads out as it moves due to wind and so the pollution/air quality in the country side (rural) is clearer and less congested with pollution. But technically there is still a lot of pollution but it's just spread out a lot.
Norilsk has air pollution. because of the huge number of factories
Air pollution