| A | B |
|---|
| emigrate | to move from one's native country to another country |
| refugee | person who has had to flee to another country for safety from disaster of danger |
| population density | average number of people living in a square mile or square kilometer |
| urbanization | when people from the country (rural areas) move to the city |
| developed country | country that is industrualized rather than agricultural |
| developing country | country in the process of becoming industrial |
| demographer | scientist who studies population |
| birthrate | nuber of people born each year per 1,000 people |
| death rate | number of deaths every year per 1,000 people |
| famine | lack of food affecting a large number of people |
