Population Pyramids

Today in class we continued our discussion with Population Pyramids. However, today's discussion was about the shape of the pyramid. There are three different shapes used to describe the shape of the pyramids. The three shapes are a Christmas Tree, a Cup and a Box. The Christmas Tree shape shows a developing nation. This also shows that the growth rates are slow and high birth rates. Lastly, there is a short life expectancy. Examples are Namibia and Bangladesh. The box represents a developed nation and low infant mortality rate. This also shows slow population growth and a long life expectancy. An example of this is the United States. The cup represents a developed nation, and a low birth rate. The cup also shows a shrinking population and a long life expectancy. An example of the cup pyramid is Italy and Japan.

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