Question

An 'undesirable change in the physical, chemical or biological characteristics of air, water and land is called pollution"

Answer 1

Answer:

Physical pollution is pollution caused by colour (change), suspended solids, foaming, temperature conditions or radioactivity. Source Publication: Glossary of Environment Statistics, Studies in Methods, Series F, No. 67, United Nations, New York, 1997. Statistical Theme: Environmental statistics.

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