What did Darwin infer from his observations of organisms in South America and the Galápagos Islands? a.
The organisms on the Galápagos Islands were virtually identical to mainland organisms.
b.
A small number of different plant and animal species had come to the mainland from the Galápagos Islands.
c.
The organisms on the Galápagos Islands were completely unrelated to mainland organisms.
d.
A small number of different plant and animal species had come to the Galápagos Islands from the mainland.