Migration - Migration Finally migration(the movement of...

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Unformatted text preview: Migration Finally, migration (the movement of people from one place to another) affects population size. While some migration is involuntary, such as when slaves where brought to America, other migration is voluntary, such as when families move from cities into suburbs. Migration into an area, called immigration , is measured as the immigration rate , which is the number of people entering a region per each 1,000 people in the population. Migration out of an area, or emigration , is measured as the emigration rate , which is the number leaving per each 1,000 people in the population. Internal migration is the movement from one area to another within a country's borders. Population growth Fertility, mortality, and migration all influence the size of a society's population. Poorer countries tend to grow almost completely from internal causes (for example, high birth rates due to the absence of...
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