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Dr.Egan's APHG Voc. Ch. 2

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20639392AIDSimmune system disease caused by the Human Immunodeficiency Virus (HIV)
20639393arithmetic population densitythe population of a country or region expressed as an average per unit area
20639394censusa periodic and official count of a country's population
20639395child mortality ratea figure that describes the number of children who die between the first and fifth years of their lives in a given population
20639396chronic diseasesgenerally long-lasting afflictions; degenerative diseases
20639397crude birth ratethe number of deaths yearly per thousand people in a given population
20639398crude death ratethe number of live births yearly per thousand people in a given population
20639399demographic transitionmultistage model, based on Western Europe's experience, of changes in population growth exhibited by countries during industrialization
20639400dot mapmaps where one dot represents a certain number of a phenomenon, such as a population
20639401doubling timethe time required for a population to double in size
20639402eugenic population policygovernment policy designed to favor one racial sector over others
20639403expansive population policygovernment policy that encourages large families and raises the rate of population growth
20639404infant mortality ratea figure that describes the number of babies who die within the first year of their lives in a given population
20639405life expectancya figure indicating how long, on average, a person may be expected to live
20639406megalopolisterm used to describe large coalescing supercities that are forming in various parts of the world
20639407natural increasepopulation growth measured as the excess of live births over deaths
20639408physiological population densitythe number of people per unit area of arable land
20639409population compositionstructure of a population in terms of age, sex, and other properties such as marital status and education
20639410population densitya measure of the number of people per given unit of land
20639411population distributiondescriptions of locations on the Earth's surface where populations live
20639412population explosionThe rapid growth of the world's human population during the past century.
20639413population pyramidsvisual representations of the age and sex composition of a population whereby the population of each age group is represented by a horizontal bar
20639414restrictive population policygovernment policy designed to reduce the rate of natural increase
20639415stationary population levelthe level at which a national population ceases to grow

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