(What) Air pollution occurs when the air contains gases, dust, fumes or odor in harmful amounts. That is, amounts which could be harmful to the health or comfort of humans and animals or which could cause damage to plants and materials.
(How 2)The substances that cause air pollution are called pollutants. Pollutants that are pumped into our atmosphere and directly pollute the air are called primary pollutants. Primary pollutant examples include carbon monoxide from car exhausts and sulfur dioxide from the combustion of coal. Further pollution can arise if primary pollutants in the atmosphere undergo chemical reactions. The resulting compounds are called secondary pollutants. Photochemical smog is an example of this.
(How 1) Air pollutants mainly occur as a result of gaseous discharges from industry and motor vehicles. There are also natural sources such as wind-blown dust and smoke from fires. In major cities and large towns throughout the world, motor vehicles cause a wide range of air pollution problems. Fossil fuel combustion, particularly as it occurs in motor vehicles, has been identified as the LARGEST contributor to air pollution in the WORLD. Motor vehicles cause most of the air pollution, except during cooler months when wood fires contribute significantly.
(Problems) Some forms of air pollution create global problems, such as upper atmosphere ozone depletion and global warming. These problems are very complex, and require international cooperative efforts to find solutions.
· You can act personally, at home or at school, or by doing something with others in the community.
· Walk or ride your bike instead of getting a lift in a car.
· Catch public transport to school
· Use products made close to your home: This reduces pollution from the transportation of goods.
· Join a local environment group.
"Air Pollution Ups Diabetes, Hypertension Risk in African-American Women." The Hindu. N.p., n.d. Web. 17 Dec. 2013.
"What Is Air...