The rectangularization of the age structure of the population, which can be represented by a pyramid, has been created by
A) work-place stress that lowers longevity.
B) the aging of the baby-boom cohort.
C) rising male-to-female sex ratio.
D) high fertility rates.

Question

Quizplus · Accepted Answer

The rectangularization of the age structure of the population, represented by a rectangular shape instead of a pyramid, is caused by the aging of the baby-boom cohort. As this large cohort of individuals born after World War II continues to age, the base of the population pyramid becomes narrower and the top becomes wider, resulting in a more rectangular shape.

The Rectangularization of the Age Structure of the Population, Which