sex
The cities that have the worst air pollution is Pittsburgh and Los Angeles
Not at all.
the pollution in the air
Mexico City
they go to smoke weed
coal
Mexico city has terrible air quality. They are plagued by smog, as well as all types of chemicals in the air. This has given them a bad climate, and terrible air pollution.
Hills and mountains qualify as such. Both Santiago and Mexico City are surrounded by these, which act as a barrier, preventing strong winds to dissipate the air pollution.
Yes it is breathing in the air was like smoking to packs of ciggerattes a day
Smog
They can lower the mountains so they not so high.