"The shape of the population pyramid reflects the characteristics of the population." Support the statement with examples.

Explanation

The shape of the population Pyramid reflects the characteristics of the population. The left side shows the percentage of males while the right shows the percentage of women is each age group. There are different types of population pyramids-
(i) Expanding population: Nigeria, Biergladesh, Mexico, India and other developing and under developed countries of the world is having the characteristics of expanding population which have triangular shaped pyramid with a wide base. These have larger population in lower age group: due to high birth rate.
(ii) Constant population: The developed countries ike Australia, has age-sex pyramid of bell shape and tapered towards the top. It shows birth and death rates are all almost equal leading to a near constant population.
(iii) Decling population : The developed countries having low birth and death rates come under this category which shows the pyramid of narrow base and a tapered top. The population growth in developed countries is usually zero or negative. Example, Japani, Britain, France, etc,