Air Pollution Essay

1780 Words Jun 5th, 2011 8 Pages
Air Pollution

Earth is the only place in the universe that can support human life. It is very important that we realize this fact and take very good care of it. Various human activities cause the destruction of earth. Human beings can live a few days without food and water however humans can last only a few seconds without oxygen. Various human activities lead to the aggravation of the quality of air. Gases produced by human activities mainly due to exploitation of resources and industrialization cause air pollution. Green house gases mainly chlorofluorocarbons; carbon
…show more content…
Currently carbon dioxide is responsible for 57% of the global warming trend.

Chlorofluorocarbons (CFC’s): CFC’s are lowering the average concentration of ozone in the stratosphere. “Since 1978 the use of CFC’s in aerosol cans has been banned in the United States, Canada and most Scandinavian countries. Aerosols are still used around the world and accounts for 25% of global CFC’s use”. (Miller 448). Spray cans discarded or leaking refrigerator and air conditioning equipment and the burning plastic foam products release the CFC’s into the atmosphere. Depending on the type, CFC’s stay in the atmosphere from 22 to 111 years.” Chlorofluorocarbons move up to the stratosphere gradually over several decades. Under high energy ultra violet (UV) radiation break them down and release chlorine atoms, which speed up the breakdown of ozone (O3) into oxygen (O2). Chlorofluorocarbons, also known as Freons, are green house gas that contributes to global warming. Photochemical air pollution is commonly referred to as “smog”. Smog is the contraction of the words smoke and fog, smog has been caused by water condensing on smoke particles, usually from burning coal. With the introduction of petroleum to replace coal economies in countries, photochemical smog has become predominant in many cities, which are located in sunny warm and dry climates with many motor vehicles. The worst episodes of

More about Air Pollution Essay

Open Document