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What is 1 + 3?
the number of children that women are capable of bearing
crude birth rate
the annual number of live births per 1,000 population
crude death rate
the annual number of deaths per 1,000 population
net migration rate
the difference between the number of immigants and emigrants per 1,000 population
the net change in a population after adding births subtracting deaths, and either adding or subracting net migration
basic demographic equation
growth rate equals births minus deaths plus net migration
zero population growth
women bearing only enough children to reproduce the population
a place in which a large number of people are permanently based and do not produce their own food