| A | B |
|---|
| birthrate | The number of live births each year per 1,000 people. |
| demographer | A scientist who studies the people who live in certain areas is called a _______. |
| immigrant | A person who moves to a new country or region in order to settle there is called an________. |
| migration | When job opportunities appear in one region and disappear in another, a _____, or mass movement of people may occur. |
| population | In a country with a high ______, or total number of people, schools and public transportation can become overcrowded. |
| population distribution | the way people are spread out over an area. |
| population density | the average number of people who live in a square mile of land |
| life expectancy | the average number of years a person is expected to live. |
| urbanization | the movement of people to cities and the growth of cities. |
| rural area | a place where the population density is low. |
