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11 Cards in this Set
- Front
- Back
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Demography
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The scientific study of population characteristics.
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Overpopulation
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The number of people in an area exceeding the capacity of the environment to support life at a decent standard of living.
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Ecumene
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The portion of Earth's surface occupied by permanent human settlement.
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Arithmetic Density
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The total number of people divided by the total land area.
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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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Agricultural Density
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The ratio of the number of farmers to the total amount of land suitable for agriculture.
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Crude Birth Rate (CBR)
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The total number of alive births in a year for every 1,000 people alive in the society.
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Crude Death Rate (CDR)
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The total number of deaths in a year for every 1,000 people alive in the society.
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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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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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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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