Question

What observation concerning the geographic distribution of species on the Galápagos Islands helped Darwin formulate his ideas about the mechanisms of evolution?> View Available Hint(s) What observation concerning the geographic distribution of species on the Galápagos Islands helped Darwin formulate his ideas about the mechanisms of evolution?> The South American fossils Darwin found resembled species from similar environments throughout the world. Darwin observed that most of the animals that inhabit these remote islands are not found anywhere else in the world, but they resemble South American species. Furthermore, each island has its own unique species. Darwin found evidence for dinosaurs in the sedimentary rocks on the Galápagos Islands.

Answer 1

Darwin observed that most of the animals that inhabit these remote islands are not found anywhere else in the world, but they resemble South American species. Furthermore, each island has its own unique species.

Step-by-step explanation:

Galapagos Islands are located 900 km off the coast of South America. During his voyage, Darwin observed that many plant and animal species are present on these islands but are not found anywhere else in the world. He also observed similarities between the species found in the Galapagos Islands and South American mainland.

These islands are the volcanic islands and separated from the mainland. He assumed that the species of Galapagos Islands such as finches were isolated there for a long time. These species diversified into the empty ecological niche and gave rise to many species by adaptive radiation.

Adaptive radiation resulted in the evolution of unique life forms found on each of these islands. Similarities and differences between the life forms of these islands and the mainland provided the basis for Darwin's concept of natural selection.