Which of the following statements about Darwin's finches is(are) true?

Question

(they may be more than 1 answer.)


A. The birds acquired different beaks in order to defend themselves against different predators.

B. A finch's beak changes over his or her lifetime to adapt to the environment.

C. They all share a common ancestor.

D. There is natural variation among the beak sizes of any species of finch.

E. Scientists have actually observed changes in average beak size and shape over time, in response to environmental changes.

Answer 1

C, D, and E are all true.