Unit 2 Vovabulary

4. The number of years needed to double a population, assuming a constant rate of natural increase.
5. The difference between the level of immigration and the level of emigration.
6. A person who is forced to migrate from their home country and cannot return for fear of persecution.
8. The total number of deaths per 1,000 people in a year.
9. Government policies that discourage or incentivize lower birth rates.
10. The average number of years an individual is expected to live.
12. The total number of people divided by the total land area.
14. The idea that population growth will eventually outpace food supply, leading to mass starvation.
17. Seasonal migration of livestock and their shepherds between mountain pastures and lowland valleys.
19. Migration *from* a location (e.g., *e*xiting a place).
20. The total number of live births per 1,000 people in a year.
22. The number of people too young or too old to work compared to the number of people in their productive years.
25. Someone who has migrated to another country hoping to be recognized as a refugee.
26. The annual number of deaths of infants under one year of age, compared with total live births.
30. Money transferred by foreign workers to their home country.
31. The scientific study of population characteristics.
32. The number of people supported by a unit area of arable (farmable) land.
34. The ratio of the number of farmers to the amount of arable land.

1. The average number of children a woman will have throughout her childbearing years.
2. A force that induces people to move *out* of their present location.
3. Migration *to* a new location (e.g., *i*nto a place).
7. A person who is forced to migrate for similar reasons as a refugee but remains *within* the borders of their own country.
11. A model that focuses on distinctive causes of death in each stage of the demographic transition.
13. A force that induces people to move *into* a new location.
15. Government policies that encourage or incentivize higher birth rates.
16. Migration that occurs in a series of smaller, less drastic moves (e.g., farm to village, village to town, town to city).
18. The percentage growth of a population in a year, computed as the CBR minus the CDR.
21. An environmental or cultural feature that hinders migration.
23. The portion of Earth's surface occupied by permanent human settlement.
24. A model with four stages that explains the change in the natural growth rate of a population.
27. A bar graph that displays a country's population by age and gender.
28. The number of males per 100 females in a population.
29. Migration of people to a specific location because relatives or members of the same nationality previously migrated there.
33. A permanent move to a new location.