Qidiruv

adj biologik

physiological, biochemical changes in organisms connected with natural phenomena and seasons.

ponds used for biological treatment of sewage. Used independently – for treatment by micro-organisms and algae of sinks, saturated with easily oxidizing organic matters, or as the intermediate objects between the industrial treatment facilities and the natural water receivers. They operate by a principle of self-treating of water, accrue sludgy mass which can be used in agriculture as fertilizer or as a raw material for its production.

unwanted, from the human position (see Anthropocentrism), changing of characteristics and qualities of industrial materials, articles, constructions, fodder and food, etc. under the influence of living organisms inhabiting them (destruction of timber by fungi and insects, growing moulds in food-stuff, deconstruction of bricklaying by the roots of plants, etc.).

biological factor preventing from the spreading of these or those species of fauna or their communities (competitiveness, preying, etc.).

usually under B.s. or simply species it is understood a population, or variety of populations, of species which are able to crossbreed forming a fecund produce (without reduction of fertility) possessing a number of common morphophisiological features and detached from other alike groups of species with almost entire absence of the hybrid forms. B.s. is a basic structural unit in a system of living organisms, a qualitative stage of evolution. In context of Obliganto asexual (agamic), parthenogenetic and self-impregnating organisms under B.s. there are understood groups of alike clones (produces of one organism) or lines possessing a genetic and morpho-physiological analogy, occupying a certain areal and having a similar type of interrelations with habitat.