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==Definitions==
==Definitions==
*1: the [[action]] of polluting especially by [[environmental]] contamination with man-made [[waste]]; also : the condition of being polluted
*1: the [[action]] of polluting especially by [[environmental]] contamination with man-made [[waste]]; also : the condition of being polluted
*2: pollutant
*2: pollutant
<center>For lessons on the [[topic]] of '''''Pollution''''', follow [http://nordan.daynal.org/wiki/index.php?title=Category:Pollution '''''this link'''''].</center>
==Description==
==Description==
'''Pollution''' is the introduction of contaminants into a [[natural]] [[environment]] that causes instability, disorder, harm or discomfort to the [[ecosystem]] i.e. physical systems or living [[organisms]]. Pollution can take the form of [[chemical]] substances or [[energy]], such as [[noise]], [[heat]] or [[light]]. Pollutants, the elements of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as [http://en.wikipedia.org/wiki/Point_source_pollution point source] or [http://en.wikipedia.org/wiki/Nonpoint_source_pollution nonpoint source pollution]. The [http://en.wikipedia.org/wiki/Blacksmith_Institute Blacksmith Institute] issues an annual list of the world's worst polluted places. In the 2007 issues the ten top nominees are located in Azerbaijan, China, India, Peru, Russia, Ukraine and Zambia.
'''Pollution''' is the introduction of contaminants into a [[natural]] [[environment]] that causes instability, disorder, harm or discomfort to the [[ecosystem]] i.e. physical systems or living [[organisms]]. Pollution can take the form of [[chemical]] substances or [[energy]], such as [[noise]], [[heat]] or [[light]]. Pollutants, the elements of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as [http://en.wikipedia.org/wiki/Point_source_pollution point source] or [http://en.wikipedia.org/wiki/Nonpoint_source_pollution nonpoint source pollution]. The [http://en.wikipedia.org/wiki/Blacksmith_Institute Blacksmith Institute] issues an annual list of the world's worst polluted places. In the 2007 issues the ten top nominees are located in Azerbaijan, China, India, Peru, Russia, Ukraine and Zambia.
