Define pollution . " Industries are pouring poison in water" - Expalin.

Explanation

Substances present in air , water or soil produced by the activity of mankind in concentration suffficient to cause harmful effect to the health , vegetables , property or to interface with the enjoyment of his property is called as pollution .
(a) Most of the chemicals of industrial wastes have been toxic to humans as well as animals and may bring about death or sub - lethal pathology of the liver, kidneys, reproductive systems , respiratory systems .
(b) In japan illness and even death occured in 1950 s among fisherman who ingested fish , crab and shell fish contaminated with methyl mercury poisoning produced a cripling and often a fatal disease called Minamata disease.