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natural population growth : ウィキペディア英語版 | natural population growth
Natural population increase (in contrast to total population increase) happens as people are born (in contrast to immigrate) into a country, and decrease as people die (in contrast to emigrate). Rates of population growth, usually expressed as a percentage, vary greatly.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「natural population growth」の詳細全文を読む
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