Question

name the main sources of pollution in urbar areas ​

Answer 1

The recently published study shows, based on the available information, that traffic (25%), combustion and agriculture (22%), domestic fuel burning (20%), natural dust and salt (18%), and industrial activities (15%) are the main sources of particulate matter contributing to cities' air pollution.

Answer 2

Answer:

The recently published study shows, based on the available information, that traffic (25%), combustion and agriculture (22%), domestic fuel burning (20%), natural dust and salt (18%), and industrial activities (15%) are the main sources of particulate matter contributing to cities' air pollution......