Define each term. Two (2) points each.

1. activity space -

2. time distance -

3. migration field -

4. maximum sustainable yield -

5. state farm -

6. collective farm -

7. aquaculture -

8. biomass -

9. megalopolis -

10. primate city -

Completely answer each question. Five (5) points each.

11. List and define three (3) barriers to migration.

12. Explain the difference between low-value and metallic minerals.

13. Explain the difference between renewable and nonrenewable resources.

14. Define push and pull factors. List two (2) examples of each.

15. Analyze Weber's "least cost theory."

16. Differentiate between site and situation.

17. List and define the four (4) sectors of the economy. Give an example of an occupation in each sector.

Completely answer two (2) of the following essay questions. Use complete sentences. Ten (10) points each.

18. List the five (5) reasons listed explaining why Americans migrate. Define each reason and give several examples for each.

19. More than one half of the world's workers make their living in agriculture. Explain in detail the differences between subsistence, commercial, intensive, and extensive agriculture.

20. Analyze the differences between immigration and emigration. Which types of countries would most likely practice each of these population control policies?