_________ smog's cause damage to the respiratory system and environmental systems with the release of nitrogen oxide (NO), ozone and volatile organic compounds (VOCs).
Photochemical smog is the chemical reaction of sunlight,nitrogen oxides and volatile organic compunds(VOCs) in the atmosphere, which leaves airborne particles and ground level ozone. This noxious mixture of air pollutants may include the following:
Aldehydes
Nitrogen oxides, particularly nitric oxideand nitrogen dioxide
Peroxycyl nitrates