Nitrogen Oxide (NOx) is a very reactive, brown-hued gas commonly produced when fuels are burned at high temperature by motor vehicles, chemical plants, etc. Industries will often intentionally oxidize NOx to produce lacquers, dies, and Nitric Acid, which is basic component in both fertilizers and explosives. When NOx is released into the atmosphere as an industrial byproduct, the results contribute substantially to smog, ozone depletion, and acid rain. More directly, exposure to NOx by humans can result in respiratory difficulty and eye, nose, and throat …
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