Why do elephants face the threat of extinction while cows do not?
a. Cattle are a valuable source of income for many people, while elephants have no market value.
b. There is a high demand for products that come from cows, whereas there is no demand for products that come from elephants.
c. There are still lots of cattle that roam free, while all elephants live in zoos.
d. Cattle are owned by ranchers, while elephants are owned by no one.
d
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Suppose that when the price of oranges is $3 per pound, the quantity demanded is 4.7 tons per day and the quantity supplied is 3.9 tons. In this case:
A. excess demand will lead the price of oranges to rise B. excess supply will lead the price of oranges to rise C. excess supply will lead the price of oranges to fall D. excess demand will lead the price of oranges to fall
Suppose the equilibrium price and quantity of ketchup fall. The most likely explanation for these changes is:
A. an increase in the supply of ketchup. B. a decrease in the demand for ketchup. C. an increase in the demand for ketchup. D. a decrease in the supply of ketchup.
Refer to the information provided in Figure 8.6 below to answer the question(s) that follow. 
Figure 8.6 Refer to Figure 8.6. Average fixed cost is represented by
A. curve 1. B. curve 2. C. curve 3. D. line segment AB.
When a U.S. restaurant purchases French wine and the French wine company uses the proceeds to buy U.S. government debt, U.S. ________ and there is a capital ________ the United States.
A. exports increase; outflow from B. imports increase; inflow to C. imports decrease; inflow to D. imports increase; outflow from