population triangles

Today in class we started a new unit. We were introduced to the population pyramids. Population pyramids. A population pyramid gives a clear understanding and shows in data form the number or percentage of people of a target demographic and shows the life expectancy and can be used to predict the population in the future. A population pyramid gives a clear picture of how a country transitions from high fertility to low fertility rate. The broad base of the pyramid means a relative majority of the population lies between ages 0–14, which tells us that the fertility rate of the country is high and above population sub-replacement fertility level.

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