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Decomposition of organic materials by microorganisms.

A controlled biological decomposition of organic material in presence of air for composition of a humus-like material.

–a mixture of gases composed in natural conditions at the microbiological decomposition of organic substances (mainly, of vegetation remains). M.g. is inflammable and mai

a process of mechanical destruction and chemical changes in rocks and minerals of a surface and near-surface strata of lithosphere under the influence of different atmosp

mixture of gases which are formed during decomposition of wastes (of dung, straw, organic domestic wastes) by cellulose anaerobic organisms with the participation of bact