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Key Terms: Age Structure: The proportions of each age group in a population. This links closely to the stage a country has reached in the demographic transition model. Gender Structure: The balance between males and females in a population. Small differences can tell us a great deal about a country or city. Infant Mortality: The number of babies that die under a year of age, per 1000 live births. Child Mortality: The number of children that die under 5 years of age, per 1000 births. |