If Lisa Beth needs special film for her expensive new camera, then for her these two goods are

Microeconomics is concerned with:

A. the aggregate or total levels of income, employment, and output. B. a detailed examination of specific economic units that make up the economic system. C. positive economics, but not normative economics. D. the establishing of an overall view of the operation of the economic system.

A nation's comparative advantage is determined by

A. the total cost of production. B. the quantity of resources required to produce a unit of output. C. the opportunity cost of producing an item relative to a trading partner's opportunity cost of producing the same item. D. specialization in the production of all goods.