Answer:
Nitrogen Oxide
Explanation:
Volatile organic compounds (VOCs) are compounds that easily become vapors or gases.
Nitrogen Oxides are gases and compounds composed of nitrogen and oxygen. They are emitted from the burning of coal, oil, gas, cigarettes, stoves, wood burning, etc. They have a high photochemical reactivity, and when they do react with sunlight, they create smog, one of the most visible signs of poor air quality.
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