Ch+15+Population+and+environment+slides

Ch+15+Population+and+environment+slides - Chapter 15:...

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    Chapter 15: Sociology of Environments The Natural, Physical, and  Human Worlds
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    Demography: The Study of Human Population Key terms fertility The incidence of childbearing in a country’s population fertility rate Births per woman crude birth rate The number of live births in a given year for every 1,000 people in a population mortality The incidence of death in a country’s population crude Death Rate The number of death’s in a given year for every 1,000 people in a population infant Mortality Rate The number of deaths among infants under one year of age for each 1,000 live births in a  given year sex Ratio The  number of males male every 100 females in a population. age-sex pyramid A graphic representation of the age and sex of a population
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    History and Theory of Population Growth In the past, people favored large families because  human labor was the key to productivity. A major demographic shift began about 1750, as  the world’s population turned upward. Our population passed the 6 billion mark in 1999. It is a major factor impacting development.
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    Population Growth
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    World population growth: low-growth north vs. high growth south
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    Infant mortality rates
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    Theories of population growth Malthus Geometric Progression of population Doubling of population (2, 4, 8, 16, 32, etc.) Arithmetic Progression of food production Limited farmland (2, 3, 4, 5, 6, etc.) Reproduction beyond what the planet could feed
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Ch+15+Population+and+environment+slides - Chapter 15:...

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