Demography
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What is the age structure?
the proportionate numbers of people in different age categories in a given population for a defined time
What is the sex structure?
the balance between males and females in a population
Replacement level fertility rate is?
the number of births at which each couple replaces themselves in the population
What is zero population growth?
a population in balance
the more economically developed the country
the lower the birth rate
What is the demographic transition model?
the transition from high birth and high death rates to low birth and low death rates regime as a country develops from a pre-industrial to an industrialized economic system
The middle-aged are ___, while the young and old are ___
independent;dependants
the dependency ratio is
ratio between the dependent and independent pop.