Chapter five key terms in text by HJ Blij/Alexander Murphy
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| linear growth | Rate of growth that advances in a straight line.
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| Exponential Growth | Growth at a constant rate of increase per unit of time.
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| Doubling Time | The time required for a population to double in size.
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| Population Explosion | The rapid growth of the world's human population during the past century, attended by the ever-shorter doubling time and accelerating rates of increase.
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| Population Structure/Composition | A population's makeup in terms of age, sex, or other properties such as martial status and education.
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| Age-sex pyramid | Graphic representation of a population showing the percentages of the total population by age and sex.
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| Demography | The study of population.
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| Natural Increase Rate (NIR) | The difference between the number of births and the number of deaths during a specific period.
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| Crude Birth Rate (CBR) | The number of live births per year per thousand people in the population.
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| Crude Death Rate (CDR) | The number of deaths per thousand people in a population.
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| Total Fertility Rate (TFR) | The number of children born to women of childbearing age.
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| Infant Mortality Rate (IMR) | The number of babies that die within the first year of their lives in a given population.
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| Demographic Cycle/Transition | Four stages of population change; high stationary stage, early expanding stage, late expanding stage, low stationary stage.
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| Demographic Transition | Represented by stages 2 and 3 of the demographic cycle.
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| Stationary population level (SPL) | The level at which a national population ceases to grow.
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