Photochemical smog happens when nitrogen oxides and volatile organic compounds react together in the presence of sunlight as a catalyst and form ozone at lower levels. The nitrogen oxides come from vehicle exhausts, and volatile organic compounds come from many chemicals, such as paint and cleaning agents.

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When fossil fuels are burned, they release nitrogen oxides into the atmosphere, which contribute to the formation of smog and acid rain. Major sources of nitrogen oxide emissions include: Cars and trucks. Coal-fired power plants.

Photochemical smog is produced when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. Nitrogen oxides come from car exhaust, coal power plants, and factory emissions.

5 Major Causes of Air Pollution

• Industry. Industries are a major contributor to air pollution.
• Vehicle Emissions. Source.
• Household and Farming Chemicals.
• Deforestation.
• Smoking.

Always avoid exercising near high-traffic areas. Even when air quality forecasts are green, the vehicles on busy highways can create high pollution levels up to one-third a mile away….Clean Air

1. Clean Air at Home.
2. Clean Air at Work.
3. Clean Air at School.
4. Clean Air Outdoors.
5. Climate Change.
6. Emergencies & Natural Disasters.

What is Being Done to Reduce Hazardous Air Pollutants? These steps include: reducing toxic emissions from industrial sources; reducing emissions from vehicles and engines through new stringent emission standards and cleaner burning gasoline; and addressing indoor air pollution though voluntary programs.

Answer. Answer: Examples are to use less toxic raw materials or fuels, use a less-polluting industrial process, and to improve the efficiency of the process. Controlling emissions related to transportation can include emission controlson vehicles as well as use of cleaner fuels.

The most basic solution for air pollution is to move away from fossil fuels, replacing them with alternative energies like solar, wind and geothermal. Producing clean energy is crucial. But equally important is to reduce our consumption of energy by adopting responsible habits and using more efficient devices.

World major city air quality ranking