Unit 3 - Population

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10 Terms

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demography

Scientific study of human populations.

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dependency ratio

the number of people who are too young or too old to work, compared to the number of people in their productive (work) years

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replacement rate

The number of births needed to maintain the population at its current number

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total fertility rate (TFR)

The average number of children a woman will have throughout her childbearing years.

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population

group of individuals of the same species that live in the same area

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baby boom

a temporary marked increase in the birth rate

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pension

money paid to people on a regular basis after they retire

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life expectancy

The average number of years an individual can be expected to live, given current social, economic, and medical conditions.

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population density

The number of individuals in an area of a specific size

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Population Pyramid

A bar graph representing the distribution of population by age and sex.