Qidiruv

– an amount of water brought by the rivers for an applicable period (decade, month, year) in comparison with an average amount for a long-term period (norm).

– maximum admissible concentration of pollutants permitted to be discharged during an fixed period of time (as a rule, calendar year); is established by power bodies of t

water reservoir characterized by water flowing in a direction of inclination in a surface deepening; there are distinguished: constant watercourses (with water flowing th

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