At the turn of the XXI century, mankind has felt the full global environmental crisis, which clearly points to anthropogenic toxification of the planet. The most dangerous environmental pollutants include many inorganic and organic substances, radionuclides, heavy metals (such as mercury, cadmium, lead, zinc), radioactive metals, polychlorinated biphenyls, polyaromatic hydrocarbons. Their constant exposure causes serious violations of basic bodily functions. Probably, people went beyond the permissible environmental impacts on all components of the biosphere, which ultimately jeopardize the existence of modern civilization. It can be said that a man came up to the limit that can not cross under any circumstances. One misstep and humanity "slips" into the abyss. One hasty movement, and mankind could disappear from the face of the earth.... If you get more information, visit our site: BEST ESSAY CHEAP
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