GEO 106 Lecture Notes - Lecture 7: Kwashiorkor, Marasmus, Mount Pinatubo
24 Oct 2017
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Document Summary
Total fertility rate(tfr)= average number of children born per female member of a population during her lifetime. Replacement fertility=the tfr that keeps the size of a population stable. Nature rate of population change=due to birth and death rates alone in countries with good sanitation, health care, and food, people live longer. Life expectancy = average number of years that an individual is likely to continue to live. Increased due to reduced rates of infant mortality. Some nations have experienced the demographic transition (cont"d) Demographic transition = a model of economic and cultural change to explain the declining death and birth rates in industrializing nations. High birth and death rates change to low birth and death rates. As mortality decreases, there is less need for large families. Factors that influence migration: push factors, pull factors, guest workers (migrant workers, refugees (war ravaged countries & environmental refugees. Cities exists as points of intense social and cultural transformation that leads to creativity.
