In geography, the study of population is very important.
Three causes for this sake the study of population are given below:
1. It is the human, who is the only producer and consumer of all natural resources on the earth. So, he is the center of entire economics.
2. With the help of study of population, available manpower and essential goods and services needed by them can be estimated.
3. Knowledge of qualitative level of population can be obtained on the basis of the study of demographic characteristics like literacy, sex ratio, etc.
