Поиск

shallow, well warmed up pools distinguished by large productivity and the heightened content of biogenic elements.

activity of state bodies, plants and citizens on observance of ecological norms and rules. State, production and public E.c. are distinguished.

earthy construction, made on a hillside for protection of its ground cover from water destruction. Water-detention and diversion E.p. are distinguished.

a matter, which, at depositing it into a soil or a pool, provides the increase in their biological productivity. Mineral, organic, bacterial F. are distinguished.

a list of rare and extinction threatened organisms; there are distinguished international, national and local versions of R.b. as well as separate R.b. of plants, animals

a hydraulic engineering construction for intake and driving back of water in a given direction; there are distinguished opened and closed C., which, in turn, are divided