- (A) Diagram A, also known as an expansive pyramid, shows a broad base,
indicating a high proportion of children, a rapid rate of population growth,
and a low proportion of older people. A steady upward narrowing shows that
more people die at each higher age band. This type of pyramid indicates a
population in which there is a high birth rate, a high death rate, and a short
life expectancy. This is the typical pattern for less economically-developed
countries, due to little access to and incentive to use birth control, negative
environmental factors (e.g., lack of clean water), and poor access to health
care.
marvins-underground-k-12
(Marvins-Underground-K-12)
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