48 ❖ Chapter 11/Public Goods and Common Resources
65. On holiday weekends thousands of people picnic in state parks. Some picnic areas become so overcrowded the
benefit or value of picnicking diminishes to zero. Suppose that the Minnesota State Park Service institutes a
variable fee structure. On weekdays when the picnic areas get little use, the fee is zero. On normal weekends,
the fee is $8 per person. On holiday weekends, the fee is $14 per person. The fee system corrects a problem
known as the
66. Imagine a 2,000-acre park with picnic benches, trees, and a pond. Suppose it is publicly owned, and people are
invited to enjoy its beauty. When the weather is nice, it is difficult to find parking, and the trash cans overflow
with food wrappers on summer afternoons. Otherwise, it is a great place. The park is a common resource be-
cause
people can be prevented from using it.
access is limited due to driving distances.
if too many people use it, one person’s use diminishes other peoples’ use.
anyone can use it without affecting anyone else.
67. Imagine a 2,000-acre park with picnic benches, trees, and a pond. Suppose it is publicly owned, and people are
invited to enjoy its beauty. When the weather is nice, it is difficult to find parking on summer afternoons. Oth-
erwise, it is a great place. An efficient solution to the parking problem would be to
prohibit parking in the vicinity of the park.
charge higher prices for parking at busy times.
police the parking area and ticket cars that are parked illegally.
68. The commercial value of ivory is a threat to the elephant, but the commercial value of beef is a guardian of the
cow. This is because
the cow is raised in developed countries, while the elephant lives primarily in less-developed
countries.
cows are private goods, while elephants tend to roam freely without owners.
cows and elephants are public goods, but ivory is nonrival.
ivory is nonrival and nonexclusive, but beef is rival and exclusive.
69. Why has the value of ivory threatened the extinction of the elephant, whereas the value of beef has enhanced
the survival of the cow?
Cows are a common resource, whereas elephants are owned by governments.
Elephants are larger than cows, requiring more economic resources.
Elephants live in Africa, where economic resources are scarce.
Elephants are a common resource, whereas cows are privately owned.