In the context of population pyramids, a pear shape refers to a pyramid where the base is narrower than the middle. This indicates a declining birth rate and an aging population.
Imagine you're at a family reunion. The youngest generation (the kids) are fewer in number and they're all playing together at one end of the yard (this is the narrow base of your pear). Meanwhile, their parents and grandparents are more numerous, filling up most of the yard (the wider middle part of your pear).
Birth Rate: The number of live births per thousand of population per year.
Aging Population: A demographic trend that occurs as the median age of a country or region rises due to rising life expectancy and/or declining birth rates.
Population Pyramid: A graphical illustration that shows the distribution of various age groups in a population.
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