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pollution is harm caused to the natural environment.
Ãâó: enviromysteries.thinkport.org/breakingthemold/reso...
pollution Contamination of soil, water or air by the discharge of wastes or other harmful materials.
Ãâó: www.moea.state.mn.us/ee/glossary.cfm
pollution Forms of pollution caused by sediment, organic and inorganic chemicals, and biological, radiological, and other toxic substances originating from land use activities, which are carried to lakes and streams by surface runoff. Nonpoint source pollution occurs when the rate of materials entering these waterbodies exceeds natural levels.
Ãâó: ag.arizona.edu/waterquality/YouthActivityPages/Glo...
pollution impurities and waste in the environment
Ãâó: www.northstar.k12.ak.us/schools/awe/noyes/glossary...
pollution The direct or indirect alteration of the physical, thermal, biological or radioactive properties of any part of the environment in such a way as to create a hazard or potential hazard to the health, safety or welfare of any living species.
Ãâó: www.watercorporation.com.au/environment/environmen...
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