In the past, there were 20 times more children than older people. then there were 7 times more people under age 15 than over age 64. currently, there are 3 times as many children as there are elders. these changes in the age make-up of the population are referred to as a

"demographic shift"

Explanation:

According to my research the changes in the age makeup of the population as shown in the question are referred to as a "demographic shift". This phenomenon of theory as some may call it is when the demographic goes from a population with high birth rates and high infant death rates to a population of low birth rates and low death rates. Leading to statistics like those shown in the question.

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answer; //it is discrimination to treat you unfairly compared to someone else,because of religion,race or

sir frederic attributed inaccuracies to schemas. memory reconstruction is one part actual events and one part personal schema, which can result in inaccuracies when memories are reconstructed.