3. A population pyramid is created by
a. studying a group of people and noting when each member dies.
b. graphing the distribution of ages in a population at a specific time.
c. calculating the number of children a woman gives birth to in her lifetime.
d. estimating the demand for services within a community.



Answer :

A population pyramid is created by:

b. Graphing the distribution of ages in a population at a specific time.

Population pyramids are graphical illustrations that show the distribution of various age groups and genders within a population at a specific point in time. These pyramids typically have a bar graph structure, with age cohorts represented horizontally and the percentage or number of individuals in each age group displayed vertically. By analyzing the shape of the pyramid, one can gain insights into the population's age structure, demographic trends, birth rates, life expectancy, and potential social and economic implications.

Creating a population pyramid involves gathering data on the number or percentage of individuals in each age group (typically divided into five-year increments) and then plotting this information on a graph. The resulting pyramid shape can be categorized into different types such as expansive, stationary, or constrictive, which provide valuable information about the population dynamics of a particular region or country.

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