Question

The air surrounding the city contain harmful gases like _ and_.​

Answer 1

Answer:

here uh go

Explanation:

The gaseous criteria air pollutants of primary concern in urban settings include sulfur dioxide, nitrogen dioxide, and carbon monoxide; these are emitted directly into the air from fossil fuels such as fuel oil, gasoline, and natural gas that are burned in power plants, automobiles, and other combustion sources.

Answer 2

Answer:

criteria air

Explanation:

the U.S. national ambient air quality standard are are limits on atmospheric concentration of 6 pollutants that cause smoge,acid ,rain and other health hazard . established by the United State environmental protection agency under authority of the clean air act, NAAQS is applied for outdoor throughout the country