Darwin's observed the Galapagos finches has graded series of break size and shape ,predicted that species were modified from one original mainland species.
He observes that beak shape varies among finch species that beak of an ancestral species had adapted over time to equip the finches to acquire different food sources. His main purpose for asking evolutionary questions about adaptation and the multiplication of species.
Finches beak shapes that corresponded to the main food source on that island, many branches of science are contributed in Darwin's theory of natural selection. This is important because isolated group of birds have evolved to match their niche diets and its a clue for Charles Darwin in his theory.
To learn more about the Darwin's here
https://brainly.com/question/27812304
#SPJ4
