birth rate, the number of births in a population in a certain amount of time, death rate, the number of deaths in a population in a certain amount of time, immigration, moving into a population, emigration , moving out of a populatoin, population density, number of individuals per unit area.

Population Changes

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

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恢復自動保存: ?