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species quantitatively dominating in a given community, as a rule, in comparison with alike forms or at all events included in one level of ecological pyramid or vegetati

Harvesting all the trees in one area at one time, a practice that destroys vital habitat and biodiversity and encourages rainfall or snowmelt runoff, erosion, landslides,

one of the types of abstracts that contain in a generalized form all the main provisions of the primary document, illustrating the material, the most important argumentat

is one of the forms of organization of profile education in the school. It is progressive and meets the requirements of the times. First of all, it gives a unique opportu

one of the layers of the Earth shells (spheres) both a composition and energy of which in their significant features are determined by the activity of a Living matter. Th

Видеоконференция для дистанционного образования - особый вид видеоконференции и специальный режим, в котором все участники (студенты) видят и слышат только одного вещающе