Population Pyramids

Today in class we talked about Population Pyramids. We talked about the different types and we looked at different nations population pyramids and the cities different population pyramids. We also took some notes...

• We use population pyramids to analyze growth(or decline) of fertility, mortality, and migration in cities...
• In population pyramids male always go on the left 
• Population is 5 year age bands
• Three basic shapes when using population the Christmas tree, the box, and the cup
• The Christmas tree is for developing nations, growth rates are slow, high birth rate, and short life expectancy
• The box is for developed nations; slow growth, low infant mortality, slow population growth, long life expectancy
• The cup is for developed nations; negative growth, low birth rate, shrinking population, and long life expectancy