I believe that all members of one species form a population.
I think the answer is 100 per so C. hope it helps hanna
His discoveries on the islands were paramount to the development of his Theory of Evolution by Natural Selection.
On the islands, Charles Darwin discovered several species of finches.
Thanks to his close observations, he discovered that the different species of finches varied from island to island.
A, because, the entire point of his theory was to prove that changes don't happen spotaneously!