ECON MACRO 5th Edition by William McEachern

تمرين 1

EXTERNALITIES Complete each of the following sentences:
a. Resources that are available only in a fixed amount are _______ resources.
b. The possibility that a open-access resource is used until the marginal value of additional use equals zero is known as the _______.
c. Resources for which periodic use can be continued indefinitely are known as _______ resources.