I tried finding the answer to this time and time again. I cannot find it. I hope someone can help me. What does photochemical smog react with?

Respuesta :

A chemical reaction between solar ultraviolet radiation and an atmosphere polluted with hydrocarbons and oxides of nitrogen causes photochemical smog. ... Smog can happen both during the day and at night, but photochemical smog only happens in the presence of sunlight.