Alcoa had a monopoly in the U.S. aluminum market from the late nineteenth century until the end of World War II. Which barrier to entry was the source of Alcoa's monopoly power?
a. Ownership of a vital resource.
b. Government franchises and licenses.
c. Patents and copyrights.
d. Economies of scale.
Question 2
Suppose that the price of telephones decreases. If more are purchased then:
a. the total utility of telephones will decrease.
b. the total utility of telephones will be unchanged.
c. the marginal utility of telephones will likely increase.
d. the marginal utility of telephones will likely decrease.
e. both a and d.
An adaptation protecting against aluminum toxicity.
A set of tie stalls in an 18th century stable
Systême silurien du centre de la Bohême / par Joachim Barrande
Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b
Predicted Temperature Trends Through the 21st Century
A pedigree for albinism collected in the early years of the twentieth century by Charles Davenport,