Darwin collected and studied a variety of fossils. The fossils provided clues to ancient organisms. As Darwin concluded, how did ancient organisms compare to modern species? A. The ancient organisms were identical to modern species.
B. The ancient organisms were larger or smaller than modern species, but otherwise identical.
C. The ancient organisms were similar to modern species, but differed in several ways.
D. The ancient organisms were very different from modern species, and lacked any significant similarities.