Population is defined as the total number of people living in a specific area at a particular point in time. It is a flow of people through time and this makes it dynamic in nature. Note that the population of a country can be obtained through census count.
Factors Affecting Population Size
The world population is estimated to be about 6.2 billion.
The size of population of the world is affected by some factors, which could be growth or decline. Some of these factors are:
- Birthrate
- Death rate
- Migration
Reasons for high population growth rate
- High Birthrate.
- Early marriage.
- High infant mortality. 4. Migration.
- Lack of birth control mechanism.
- Improved medical facilities.