This chapter noted that chickens and the "chicken of the sea" (tuna) are fundamentally different in terms of population though they are both food. Indeed, chickens are eaten far more than tuna, and chickens are abundant compared with their ocean-living cousins.

a. What difference between these two species does this chapter identify as the explanation for this seemingly strange puzzle?

b. As population and prosperity have increased, the demand for chicken has increased. What happens to the price of chickens as a result? Why?

c. Because of the rules humans have concerning chickens, what happens to the number of people raising chickens as a result of the price change? Why? What happens to the number of chickens? Why?

d. What happens to the price of tuna as population and prosperity increase? Why?

e. Because of the rules humans have concerning tuna, what happens to the number of people harvesting tuna as a result of the price change? Why?