The same you can find in other parts of the world: air pollution, noise pollution, litter, polluted ground and underground water sources, deforestation. It is not specially high, at least when compared with other countries in the world.
yes
a
Geography.
The pollution in Mexico has been an issue for several years. The Mexican government has worked on several plans to fix the problem and the most recent is to eliminate the emissions that contribute to the climate.
It is very difficult to put a blame for Mexico City pollution problems on a specific type of worker or economic class. I would say 'everyone', as the most important issue related to Mexico City is overcrowding.
hazardous air pollution and liter happen in New Mexico.
The city is built in a bowl-shaped crater of an extinct volcano.
Pollution is a problem for everyone living on Earth!
yes, pollution is a huge problem in countries like china and India and overall, pollution is a huge problem for the earth and its inhabitants.
It is a problem to everyone.
It is a "contained" problem that affects most industrial areas throughout the country. Depending on the specific area, there are places within Mexico with a really bad pollution problem (especially on manufacturing cities along the US-Mexico border) while there are others with almost pristine environments, due to them being tourist areas which depend on beauty and minimal ecological footprint to operate. A couple of contrasting examples are provided on the "related links" section.
Air pollution is not useful. It is a problem.