Q. Which of the following are the characteristics of expanding population?
(i) Pyramid - shaped age structure.
(ii) An urn-shaped age structure.
(iii) Pre-reproductive and reproductive age groups become more or less equal in size.
(iv) Rapidly growing population with high birth rate.

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Solution:

Expanding population is a population containing a large proportion of young individuals. Pyramid shaped age structure and an urn-shaped age structure are the characteristics of expanding population.