population pyramid

Today we reviewed and watched the video on the population pyramids. /They are graphical illustration that shows the distribution of various age groups in a population, which forms the shape of a pyramid when the population is growing. We watched about the different countries like Nigeria and Russia where the population in Nigeria are growing very quickly cause they are having kids a lot. Also, Russia is decreasing in depression because they are still recovering ww2 and the amount of people that went to war and died in war. Also, the pre-reproductive stages start at 0-14 and then reproductive would 15-45 then post reproductive is 45-100+. Finally, we talked about the different population in different countries like Japan are still growing but growing slowly just like the United States. 

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