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Pollution refers to:
Option: 1
Any undesirable change in physical, chemical or biological characteristics of air, water or soil.
Option: 2
Any desirable change in forests and rivers
Option: 3
Agents that bring about such an undesirable change are called as pollutants
Option: 4
More than one correct answer
Answers (1)
As we have already studied in Pollution -
Pollution is any undesirable change in physical, chemical or biological characteristics of air, land, water or soil.
- wherein
Agents that bring about such an undesirable change are called as pollutants.
Hence, the correct option is (d).
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