Demography

The number of live births per 1000 of the population per year. 

The number of deaths per 1000 of the population per year.

The average number of children a woman wil have during her fertile years. This is defined as 15-44.

The number of infants who die under the age of 1, per 1000 live births per year.

The difference between the number of immigrants entering a country and the number of emmigrants leaving a country.

The difference between the number of births and the number of death in a population, resulting in either a natural increase or a natural decrease.

Movement out of an area or society

The movement out of an area or society.

The study of population, including birth, death, fertility and infant mortality rates. The immigration and emmigation and the reasons for these.

The relationship between the size of the working population and the non-working or dependant population.