Blog Post #29 -Population Pyramids-

     Today in class our main focus was on the subject of population pyramids. We use population pyramids to analyze growth (or decline) of fertility, mortality, and migration in cities. There are three different shapes/types of population pyramids. The first one is  "The Christmas Tree" which is a triangle so it is wider at the bottom and thinner at the top. This would be a developing country. It is high in population growth and high in birth rate. It also has a short life expectancy. Examples of this would be any poor African countries. The next shape is "The Box". This is basically a rectangle and the pyramid is more boxed hence the name. These countries are developed and have slow growth. They have a low infant mortality, slow population growth, and long life expectancy. Examples would be the United States and Sweden. The last shape is "The Cup". This is basically a trapezoid type shape that is wider at the top and thinner at the bottom. These countries are developed, however they have negative growth. They have low birth rates, shrinking population, and a long life expectancy. Examples would be Monaco, Japan, and Italy.