In the Evolution of Whelk-Eating Behavior in Crows, Which of the Following

question 55

Multiple Choice

In the evolution of whelk-eating behavior in crows, which of the following did natural selection minimize?

• A)the average number of drops required to break the shell
• B)the average height a bird flew to drop a shell
• C)the average total energy used to break shells
• D)the average size of the shells dropped by the birds
• E)the average thickness of the shells dropped by the birds