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On the basis of the demographic data of a country given below, construct an age pyramid and explain whether the population is stable, declining or growing. - Biology (Theory)

Question

On the basis of the demographic data of a country given below, construct an age pyramid and explain whether the population is stable, declining or growing.

Age group	No. of individuals
Pre-reproductive	20,000
Reproductive	15,000
Post-reproductive	10,000

Answer in Brief

Solution

In the given data, the number of pre-reproductive individuals is very large, the number of reproductive individuals is moderate, while post-reproductive individuals are fewer. This type of age pyramid shows that the population is "growing". The rate of growth depends on the size of the pre-reproductive population. This type of population growth is observed in developing countries like India, Bangladesh.