NOx is a generic term for the various nitrogen oxides produced during combustion.
See also:
They are believed to aggravate asthmatic conditions, react with the oxygen in the air to produce ozone, which is also an irritant and eventually form nitric acid when dissolved in water.
When dissolved in atmospheric moisture the result can be acid rain which can damage both trees and entire forest ecosystems..
For more information about the topic Nitrogen oxide, read the full article at Wikipedia.org, or see the following related articles:
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Nitrogen oxide at Wikipedia.org. See the Wikipedia copyright page for more details.

