Question

What discovery led Darwin to develop his theories on adaptation?
a.
The Galapagos islands contain a range of habitats.
b.
The Galapagos islands originate from volcanoes.
c.
The birds Darwin found in the Galapagos were different types of finches, not separate types of birds.
d.
Many of the organisms in the Galapagos lived in hostile environments.

Answer 1

c.

Darwin (and later zoologist John Gould) found that the birds were various closely related finch species with different beak shapes adapted to different island habitats and diets — evidence of descent with modification and adaptation by natural selection.