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[Latin ad – on, at, by and sorbere – to absorb, to suck] – absorption of a substance from solution or gas by a surface layer of a solid body (called an adsorbent); it pla

one of the most applicable methods of water treatment, at which it occurs the mineralization of organic substance by micro-organisms – saprobionts in shallow-water ponds

changing of a substance at heating up from a solid to a gas without being a liquid. In meteorology and glaciologies the term S. is applied in revertive meaning: changing

interrelation between organisms through which passes a transformation of a substance and energy in ecosystem; groups of species connected with one another by a relation:

accumulation of a substance (as a rule, a persistent chemical or heavy metal) in the tissue of a plant or animal, mainly in result of getting water or nutrition in; it ta

– a substance which is capable to cause any harm to health of the people or environment. In legislation of a number of countries (the USA, Germany, Canada, Japan, Russia)