What is trapping? Where did it take place? What animals did it mostly affect? How important was this industry?

9) a & b

10) true.

11) false.

12) false.

13) true.

14) false.

15) true.

16) true.

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"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

answer; earthquake;