Question

Which of the following was an early realization that gave rise to Darwin's theory of natural selection?
A.) Organisms do not appear to be closely related.
B.) The earth is younger than previously thought.
C.) The earth and its organisms have changed through time.
D.) Most organisms share the same habitat.

Answer 1

The varities of organisms observed by Darwin on the Galapagos Islands as Darwin realized these creatures all came from the South American mainland and were quite variant from Island to Island as to size, coloration and the different ways the organisms made their living.

Answer 2

So what would the answer be?!