Wednesday, October 31, 2018

Population and Migration Part 5

population pyramids

  • we use population pyramids to analyze the growth or decline of fertility, mortality, and migration in cities
  • males are always on the left
  • three basic shapes, the Christmas tree, the box, the cup
  • christmas tree: developing countries
    • ex. namibia
    • growth rates are slow
    • high birth rate
    • short life expectancy
  • the box: developed nation
    • ex. USA
    • low infant mortality
    • slow population growth
    • long life expectancy
  • the cup: developed nation
    • ex. Japan
    • low birth rate
    • shirking population
    • long life expectancy

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