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  • Publicado : 4 de octubre de 2010
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What Is The Environmental Pollution
Environmental pollution is “the contamination of the physical and biological components of the earth/atmosphere system to such an extent that normal environmentalprocesses are adversely affected”. (1)
“Pollution is the introduction of contaminants into the environment that cause harm or discomfort to humans or other living organisms, or that damage theenvironment” which can come “in the form of chemical substances, or energy such as noise, heat or light”. “Pollutants can be naturally occurring substances or energies, but are considered contaminantswhen in excess of natural levels.” (2)
Pollution is “the addition of any substance or form of energy (e.g., heat, sound, radioactivity) to the environment at a rate faster than the environment canaccommodate it by dispersion, breakdown, recycling, or storage in some harmless form”. (3)
“Pollution is a special case of habitat destruction; it is chemical destruction rather than the more obviousphysical destruction. Pollution occurs in all habitats—land, sea, and fresh water—and in the atmosphere.” (4)
“Much of what we have come to call pollution is in reality the nonrecoverable matterresources and waste heat.” (5)
Causes
1. Artificial fertilizers applied to agricultural crops. Most crops are now nutrient saturated, and because artificial fertilizers are so cheap, they are oftenover-applied. This implies that the excess which is not taken up by the plants they are applied to (be they agricultural crops, the lawn in your yard, or at the golf course) are washed away into rivers,streams and ground water.
2. Concentrated sewage. The concentration of both animal wastes from intensive livestock production and the concentration of human wastes from urbanization also lead toconcentrated nutrient pollution. Sewage is often dumped directly into surface waters, spread in too great a concentration on soil, or seeps into groundwater.
3. Combustion. All forms of combustion,...
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