Поиск

energy of any kind of a radioactive radiation occluded by a mass unit of irradiated environment.

capability of a community on a basis of usage of matter and energy to reproduce an organic matter. B.p. is usually assessed by biological commodity, net and gross, expres

amount of organic matter produced in a unit of time per a unit of area by living organisms, included in composition of this or that ecosystem (e.g. kg / hectare per a yea