(a) Represent diagrammatically three kinds of age-pyramids for human populations.
(b) How does an age pyramid for human population at a given point of time help the policy-makers in planning for the future? [5]
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Solution
(a) [3]
(b) The shape of the pyramids reflects the growth status of the population based on age. Gives information about how many individuals are there at each stage. This helps the policy makers to plan infrastructure, transport, food, medicine, employment etc. [2]