fun!

5. There are many physical systems that would work, for example, the study of planets (micro) in the solar

system (macro), or solar systems (micro) in the galaxy (macro).

6. Draw a box outside the original circular flow to represent the foreign country. Draw an arrow from the

foreign country to firms, to represents imports. Draw an arrow in the reverse direction representing

payments for imports. Draw an arrow from firms to the foreign country to represent exports. Draw an

arrow in the reverse direction to represent payments for imports.

7. There are many such problems. Consider the AIDS epidemic. Why are so few AIDS patients in Africa and

Southeast Asia treated with the same drugs that are effective in the United States and Europe? It is

because neither those patients nor the countries in which they live have the resources to purchase the

same drugs.

8. Public enterprise means the factors of production (resources and businesses) are owned and operated by
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