Blog Day Twenty- Nine: Population Pyramids

Today in class we finished going over the test. We also started to watch a video about population pyramids. In the video I learned that Russia and Nigeria have the same population, only Nigeria is one- sixteenth the size of Russia. Then the video started to discuss population pyramids. I learned that the pyramids are split in half based on gender, and that males are on the left where females are on the right side of the pyramid. The pyramid is also split in five-year increments. With those five year increments the entire chart is split into three different groups. The first at the bottom of the pyramid being pre-reproductive, which runs from ages zero to fourteen. The next group on the middle of the pyramid is the reproductive group, which runs from ages fifteen to forty-four. The last age group at the top of the pyramid is the post reproductive age group, which runs ages forty- five and up. Overall population pyramids are a cool way to track a country's population and I look forward to finishing the video tomorrow.