Imagine a chart showing the number of people in different age groups (0 to 5 years old) as blocks in proportion to the number of people in each age group. If each of these age blocks is shown stacked with the youngest at the bottom and the oldest at the top, what shape will the whole stack assume when there is a rapid population doubling time?

Question

Quizplus · Accepted Answer

When there is a rapid population doubling time, the number of people in younger age groups increases faster than in older age groups. This results in a proportionally larger number of blocks at the bottom of the stack representing younger age groups. As a result, the stack will assume the shape of an expanding pyramid, with a wider base and a narrower top.

Imagine a Chart Showing the Number of People in Different