| A | B |
|---|
| birthrate | Annual number of live births per 1,000 members of a population. |
| death rate | Annual number of deaths per 1,000 members of a population. |
| demographic transition theory | Theory of population in which population patterns ae said to be tied to a society's level of technological development. Theoretically, a society's population progresses through three distinct phases. |
| demography | Scientific study of human populations. |
| doubling time | The number of years necessary for a population to double in size based on its current rate of growth. |
| family planning | Concious decision by married couples to have only a certain number of children. |
| fecundity | Biological potential for reproduction. |
| fertility | Actual number of births per 1,000 women of childbearing age in a population. |
| growth rate | Birthrate minus death rate. |
| infant mortality rate | Annual number of deaths among infants under one year of age per 1,000 live births in a population. |
| life expectancy | Average number of years a person born in a particular year can be expected to live. |
| Malthusian Theory | Population theory stating that populaiton increases geometrically (by exponents) and the food supply increases arithmetically (by basic addition), eventually leading to widespread starvation. |
| migration | Movement of people from one specified area to another. |
| migration rate | Annual difference between in-migration (immigration) and out-migration (emigration.) |
| mortality | The number of deaths in a society. |
| population | The number of people living in an area at a particular time. |
| Population Pyramid | Graphic representation of the age and sex distribution of a population. |
| zero population growth | The point at which the birthrate and death rate produce a growth rate of zero. |
| Crude Birth Rate | = (Live births/ total population) x 1,000 |
| Death Rate | = (deaths/ total population) x 1,000 |
| Infant Mortality Rate | = (infant deaths/ total live births) x 1,000 |
| Growth Rate | % = (birth rate - death rate) x 0.1 |
| Net Migration Rate | = immigration - emigration |
| Doubling Time | = 70/ growth rate |
