Smog:Nitrogen dioxide plays a significant role in forming smog, which is a type of air pollution characterized by hazy conditions caused by pollutants like nitrogen oxides.
Ozone Layer Depletion: Nitrogen oxides contribute to ozone layer depletion when they react with other chemicals high up in the atmosphere, leading to environmental concerns.
Combustion Engines: Vehicles powered by combustion engines produce nitrogen oxide emissions during fuel combustion. Understanding combustion engines helps us understand the main source of nitrogen dioxide.