Birth rate/Natality:-
- Total number of birtjh per 1000 of the population .
- natality depends on fertility of female fertility means a female can give birth to new young in her intine reproductive age
- Population growth rate may be negative but birth rate can never be nigative
- Total number of death per 1000 of the population.
- During 1960 in developing country population explosion was due to high death rate.
- Emigration:-Moving out of population from a region.
- Immigration:-Moving in of population in the region.
- Immigration leads to population explosion in developed cities.
The Female between the age of 15 to 44(ideal) is responsible for growth of population.
✱ Crude Birth rate:-
Total number of live birth up to mid of the year that is july 07.
✱ Crude death rate:-
Total number of death up to mid of the that is july 07.
✱ Demographic transition state=Crude Birth rate- Crude death rate
For devoloping country demography transition state is zero.
✱Replacemt level:-
- Total number of child borned by their parents to replace the parents.
- For developed Country Replacement level is 2.1,for developing country replacement level is 2-6-2.7.
✱contraception:-To avoid the pregnancy.
