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

Question

Quizplus · Accepted Answer

Natural selection would have minimized the average total energy used to break shells because this is a measure of efficiency in obtaining the food. Any unnecessary energy expenditure would have been selected against.

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