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View of the demographic crisis, which is characterized by an excess of the resource population, lack of resources to maintain the hygiene of life due to lack of funds on the part of community life. Overpopulation - a relative value, depending on the resource base of the territory of residence of the population, and also includes an assessment of the issuance and renewal of sources of means of subsistence.It is estimated by various methods1) A simple estimate: the ratio of the measured population to land area, given the volume of the surface of the soil on which it lives;2) Regenerative rate: the ratio of the rate of resource consumption of the population to the rate of renewal of these same resources, net of the amount of resources that need to maintain ecosystems and regenerative nature of the system (in accordance with the position of the overpopulation of the Earth's population will be over 25 billion3) A summary of expansion options: estimated ratio of population growth to the rate of progress, which provides the possibility of the emergence of new sources and the potential to expand the resource base.