Chad has a high birth rate and a youthful population
© Jaco Klamer/Alamy Stock Photo
Population pyramids are a form of graph used to show the population structure of a country.
The graph plots either the number, or the percentage, of people in different age categories divided into female and male. They are named after the pyramid shape that many countries’ population structures used to have. However, in many countries, changing population characteristics mean that the shape has changed dramatically, as we’ll discuss.
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