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.

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

)
ऑटो-सेव पुनःस्थापित करें: ?