Which one of the following is NOT a greenhouse gas found naturally in the atmosphere?
- A.Nitrogen oxide
- B.Carbon dioxide
- C.Methane
- D.Ozone
Show answer
Nitric oxide and nitrogen dioxide, together written as nitrogen oxides, are air pollutants that come mainly from combustion in vehicles and power stations; they help form smog and acid rain but are not counted among the greenhouse gases of the natural atmosphere.
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