Age structure diagrams (article) | Khan Academy
https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:populations/x0b0e430a38ebd23f:human-populations/a/age-structure-diagrams
WEBAn age structure diagram, or population pyramid, shows the distribution of age and sex in a population. The y-axis of the diagram shows age groups from birth to old age. The x-axis shows the population percentage. The percentage of males and females in each age group are shown on the left and right sides of the diagram, respectively.
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