AP Human Geography Chapter 2 key issue 1 & 2 Vocab – Flashcards
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Doubling Time
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The number of years needed to double a population, assuming a constant rate of natural increase.
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Ecumene
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The portion of Earth's surface occupied by permanent human settlement.
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Infant Mortality Rate (IMR)
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The total number of deaths in a year among infants under one year old for every 1000 live births in a society.
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Life Expectancy
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The average number of years an individual can be expected to live, given current social, economic, and medical conditions. Life expectancy at birth is the average number of years a newborn infant can expect to live.
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Natural Increase Rate (NIR)
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The percentage growth of a population in a year, computed as the crude birth rate minus the crude death rate.
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Overpopulation
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The number of people in an area exceeds the capacity of the environment to support life at a decent standard of living.
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Physiological Density
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The number of people per unit of area of arable land, which is land suitable for agriculture.
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Total Fertility Rate (TFR)
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The aver number of children a woman will have throughout her childbearing years.
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