Which market structure(s) is(are) considered highly concentrated?

What characteristic do both human and physical capital share?

A) Both are controlled by the government. B) Current costs are incurred for future benefits. C) The use of both exhibits rivalry. D) They can easily be transferred to new ownership.

Microeconomics is concerned with the study of

A) the effects of inflation. B) the effects of government spending. C) the effects on individual producers of higher wages paid to workers. D) aggregates.