Geography 2153A/B Chapter Notes - Chapter 4: Thomas Robert Malthus, Infant Mortality, Machine Age
19 Dec 2013
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Document Summary
Human population growth may be the environmental issue. Historical growth of the human population is described in term of four major periods or stages: Stage 1: hunters/gatherers total world population, population density, and average rate of growth were very low. Stage 2: early, preindustrial agriculture - beginning at the time of agricultural settlement; first major increase in the total world population; much greater density of people. Stage 3: the machine age (industrial revolution) rapid increase in the human population resulting from improvements in health care and food supplies. Stage 4: the modern era - represents today"s increasingly urbanized world, rate of population growth has declined in wealthy, industrialized nations but has continued to rise rapidly in poorer developing countries. Demography: scientific study of the characteristics and changes in the size and structure of human populations. Changes in population sizes occur through births, deaths, immigration (arrivals from elsewhere), and emigration (individuals leaving to go elsewhere)
