Answer:
The merits of knowing the composition of population are enlisted below: It helps to find out the structure of population. It helps to study on various demographic indicators. It helps for the future plan such as age composition, sex composition and so on. It is the main pillar of population studies. Population composition is the description of a population according to characteristics such as age and sex. These data are often compared over time using population pyramids.
Step-by-step explanation: