Microeconomics 1st Edition by Dean Karlan,Jonathan Morduch

تمرين 1

State whether each of the following primarily causes an external cost or an external benefit.a. Fishing at a popular lakeside vacation spot.
b. Buying a fax machine.
c. Conducting research to find an AIDS vaccine.
d. Occupying a seat on a bench in a crowded park.
e. Littering.
f. Spaying or neutering your pet.