What is population composition? How its shown in population pyramid?
Answers
Explanation:
Population structure means the 'make up' or composition of a population. Looking at the population structure of a place shows how the population is divided up between males and females of different age groups.
Population pyramids show the structure of a population by comparing relative numbers of people in different age groups.
Population structures differ markedly between Less Economically Developed Countries LEDCs and More Economically Developed Countries MEDCs.
The shape of a population pyramid can tell us a lot about an area's population.
Usually pyramids are drawn with the % of male population on the left and % of female population on the right.
It gives us information about birth and death rates as well as life expectancy.
A population pyramid tells us how many dependants there are. There are two groups of dependants; young dependants (aged below 15) and elderly dependants (aged over 65).
Dependants rely upon the economically active for economic support.
Many LEDCs have a high number of young dependants, this means that the pyramid will have a wide base and the sides of the pyramid will decrease as fewer people will reach old age
However, many MEDCs have a growing number of elderly dependants, this will be shown by the pyramid having straight sides or a barrel shape. The pyramid will also be much taller.
We need to understand about their qualities People vary greatly in their age, sex,literacy, level, health, occupation, and income level Population composition refers to the structure of the population in a specific area An interesting way of studying the composition of population is by looking at the Population Pyramid also called age sex pyramid
