Pollution
Category : 8th Class
Pollution
Our environment is our surrounding. It comprises all living and non living things. Any undesirable change in the physical, chemical or biological characters of air, water and soil leads to environmental pollution which is harmful to human beings directly or indirectly.
Pollutant
A pollutant is a substance that may be added to the environment directly or indirectly by man or natural events, to extent which adversely affects humans, animals, vegetation and other materials..
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