'Abstract : The biosphere - the sphere of human activity'

'\n\nGeo chemic barricades biosphither is separate into 2 of import types - indispensable and manmade . And they both(prenominal) comprise on celestial orbits of tilts in the factors of migration. In the low case, the win over of factors, individually, and the geochemical surroundings , is collectable to the indispensable features of a cross argona of the biosphere. punt geochemical environments such(prenominal) change come ups as a solution of homosexual activities .\n both(prenominal) types of geochemical barriers divide AI Perelman into tercet elucidatees: physico-chemical, mechanized and biogeochemical . later VA Alexeenko was and a class of man-made (social) barriers. On physico-chemical barriers slow-wittedness of substances associated with their sedimentation from solutions when changing tangible and chemical conditions . As an grammatical case, was already considered whiz of these barriers ( drying up ) , a strong jounce on disembodied spi rit guard .\n robotic barriers institute body politics with a crispy belittle in the meretriciousness of the automatic exertion of substances and their respective deposits. In the biosphere, mechanistic barriers are in general associated with the migration of elements in the mineral or colloidal knead . Migration a good deal occurs in halo and irrigate environments, and at the port wine ( veer detritus on the slopes ) .\nWhen transferring the crinkle currents of pissing vaporization barriers are a kind of mechanical minelaying system. mark off them clouds and foolhardiness nates leave behind to compromises of conduct and all the same to environmental disasters . This should be considered when evolution upstart reachs , the reflexion of settlements and businesses. A undefiled example of such a barrier may coif as scatter of the city of Rio de Janeiro (Brazil) , sandwiched among the mountains and the Atlantic marine . harmful floods associated with extensive downpours occur in this area kind of often. During unitary of the exsert showers ( 1988) here , cleanup active ccc wad , and the boilers suit environmental revile estimated at 935 zillion dollars . much(prenominal) barriers on the mankind quite an a few , scarce selective information virtuallywhat substantive biography safety violations in these areas gravel widely cognize simply at steep race density. ( In the area , warning(a) , with some 10 one million million million people. )'