Facebook is a social networking website that is used by a growing number of individuals. Because of its popularity, it is now more difficult for new networking websites to enter and compete with Facebook. Facebook enjoys ________ as a barrier for others to enter the market.
A. a network externality
B. price discrimination
C. a negative externality
D. economies of scale
Answer: A
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A subsidy
a. used in an abatement equipment market can achieve an efficient solution if the subsidy is set equal to the MEB at QE b. on pollution reduction activity encourages firms to reduce pollution below a predetermined standard c. on abatement equipment can create bias by changing the relative prices of various abatement technologies d. all of the above e. (a) and (b) only
Unlike most of sub-Saharan Africa in the nineteenth century, South Africa was __________.
National income accounting fills in the dollar values in the circular flow of income
a. True b. False Indicate whether the statement is true or false
The key explanation for the prevalence of waterway pollution is
a. the inclusion in production of all costs involving use of the waterway. b. that there are private costs but no costs to society. c. that waterways are not private property and can be used free of charge. d. that waterways are subject to the market's normal control procedures.