What is TRUE of the Appalachian Highlands? They include many active volcanoes.
They were once very high mountains that have eroded over time.
They divide the continent's rivers so they flow east or west.
They stretch from Canada to Mexico.
The highest peak is Mount Mitchell in Georgia.

Match your vocabulary word to its definition. 1. emigration 2. immigration 3. migration 4. overpopulation 5. sustainable development 6. under population 7. unsustainable development 8. urbanization the movement from one place to another the number of people exceeds the available natural resources in an area leaving one's homeland to settle in a new place the increase in the population of a city the movement of people to a new country the ability to meet current needs without reducing the ability to meet future needs resources being used up at a faster rate than they can be replenished birth rate insufficient to replace the existing population