Pollution is the contamination of any feature of the environment and attached to it are certain characteristics. It is the addition of a substance or
substances at a faster rate than the environment can accommodate.
Certain pollutants like arsenic and mercury have natural levels in nature but only if these levels exceed certain critical values, will it be considered
pollutants. Pollutants are not only chemicals but also forms of energy like heat, sound and radioactive rays. To be a pollutant, a material has to be potentially harmful to life. Air pollution is a problem that has existed since humans first used fire. Two major causes of air pollution include exhaust fumes from cars and trucks and pollutants produced by human activities, which result in a number of health risks. In order to improve our air quality, we must work together as a nation and do our part to attain cleaner air.
Our air is colorless, odorless and tasteless, making it barely noticeable unless air is polluted with particles of dust, smoke, pollen or
unpleasant odors.
…
