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Population in 1800
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1 billion
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Population in 1930
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2 billion
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Population in 1960 (Max growth rate)
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3 billion (doubled in 40 years)
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Population in 2000
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6 billion
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Malthus Perspective on Population Growth
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Populations always grow exponentially, and thus outstrip resources--which leads to social decline
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Marx Perspective on Population Growth
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Population growth is promoted by social ills (poverty, pollution..)
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What is the role of technology in human populations
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Its increases human carrying capacity
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Demography
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Vital statistics about people
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I=PAT Forumla
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Countrys Impact = Population, Affluence, and technology
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Crude Birth Rate (natility)
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Number of births in a year per thousand people
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Total Fertility Rate
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# of children born to an average woman in a population during her entire repoductive life
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Zero Population Growth
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Births + immigration = deaths + emmgiration
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Crude Death Rates
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Number of deaths per thousand people in a year
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Life Expectancy
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Average age that a newborn infant can expect to reach
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Dependency Ratio
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Number of nonworking/ working individuals
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