CERTAIN CRITICAL OBSERVATIONS ON MELANOPHORES AS BIOMARKER OF WATER POLLUTION

Recently, first time in entire cultural history, man has faced one of the most horrible ecological crisis - the problem of pollution of his environment which some time past was pure, virgin, undisturbed, uncontaminated and basically quit hospitable for man. The presence in or introduction into the environment of a substance having harmful or poisonous was felt by man now. Pollution is an undesirable change in physical, chemical or biological properties of air, water and soil, which directly or indirectly affect human beings. (Odum 1971). This may harmfully affect human life or that of desirable species, our industrial processes living conditions and cultural assets. In other words pollution is used to refer harmful materials introduced by man into the environment. Thus in a way, pollution is used to release in excess of permit table limit of foreign substances within the environment (Michal 1984).