| pollution |
Unwanted chemicals or other materials found in the air. Pollutants can harm health, the environment and property. Many air pollutants occur as gases or vapors, but some are very tiny solid particles: dust, smoke or soot.
출처: www.nescaum.org/glossary.html
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| pollution |
The release by humans, directly or indirectly, of substances (including gases) or energy into the environment, which results or is likely to result in deleterious effects. These may include: causing harm to living resources and life, being hazardous to human health, hindering human activities, or impairing the quality of the environmental resources and reducing amenities.
출처: www.climatechangecentral.com/default.asp
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