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

طباعة
تضمين

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

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