Population Pyramids
Today in class we learned about population pyramids. We use these to analyze growth or decline of fertility, mortality, and migration of cities. They are divided up into sections. There are three basic shapes. They are the Christmas Tree, the Box, and the Cup. The Christmas Tree is still developing. This shape has a high birth rate. This shape also has a short life expectancy. For example, Namibia, and Bangladesh. The Box is a developed shape. The Box shape also has a slow population. It has a low infant mortality. This shape also has a long life expectancy. For example, Sweden, and U.S.A. The cup is developed as well. Although this has negative growth. This shape also has a low birth rate. It also has a long life expectancy. For example, Italy and Japan. We had a great class of learning different categories of Population Pyramids and much more.
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