2. One could claim that Air Pollution started when humans
began burning fuels or open-burning. In other words, all man
made emissions into the air can be called air pollution, because
they alter the chemical composition of the natural atmosphere.

3. Air Pollution is the introduction of particulates or other
harmful materials into Earth’s Atmosphere.
 Anthropogenic Sources (Man-Made)
 Natural Sources

4. Construction sites produce a lot of dust
Construction Sites

5. Releases the dangerous compounds
Carbon Monoxide, Benzene, Lead, Dioxin and other
Open Burning

6. Carbon monoxide gas from motor vehicle exhaust
Motor Vehicle Exhaust

7. Ash from a volcanic eruption
Volcanic Eruption

8. Release of smoke, Ash, Dust, Carbon dioxide, Nitrogen oxides
Forest Fires by lightning

9. Windblown dust from areas with little vegetation
Desert Area

10. An air pollutant is a substance in the air that can have
adverse effects on humans and the ecosystem. The substance can
be Solid particles, Liquid droplets, or Gases.
 Primary Pollutants
 Secondary Pollutants

11. Pollutants emitted directly into the air. Primary pollutants
are usually produced from a process.
 Sulphur oxides (SOx)
 Carbon monoxide (CO)
 Nitrogen oxides (NOx)
 Ammonia (NH3)

12. A chemical compound with the formula SO2 . Coal and
petroleum often contain sulphur compounds, and their
combustion generates sulphur dioxide.

13. Sulphur Dioxide (SO2) released from factories
Sulphur oxides (SOx)

14. Petroleum combustion
Sulphur oxides (SOx)

15. It is a product by incomplete combustion of fuel such as
natural gas, coal or wood.

16. Natural gas is used for everyday cooking
Carbon monoxide (CO)

17. Vehicular exhaust is a major source of carbon monoxide
Carbon monoxide

18. Nitrogen oxides, particularly nitrogen dioxide, are
expelled from high temperature combustion.