| A | B |
|---|
| Demography | the study of populations |
| Population | the actual number of people living in a given area |
| Population Distribution | how the population is spread out over an area |
| Population Density | the average number of people living in a given area per square mile |
| Population Growth Rate | the increase in population over a period of time |
| Zero Population Growth | occurs when the combined birth rate and immigration rate equal the combined death and emigration rates |
| Birth Rate | number of live births each year per 1,000 people |
| Death Rate | number of deaths each year per 1,000 people |
| Immigrants | people who move into a country |
| Emigrants | people who move out of a country to live elsewhere |
| Urbanization | the growth of city populations |
