Finches are a type of bird that eat mostly nuts. because of this, all finches have hard beaks. however, not every beak is the same. if a finch is born with an exceptionally hard beak, this can be a survival advantage. how is a harder beak an advantage?
a) a harder beak will provide a reproductive advantage.
b) a harder beak will allow the finch to fly faster and farther than before.
c) a harder beak would allow the finch to use it to burrow even deeper into trees foraging for insects.
d) a harder beak would allow the finch to crack open even the hardest shells, meaning it has a bigger food supply than most.