The value to Darwin of Lyell's ideas on the geologic history of the earth was the
A) evidence from fossils.
B) record of catastrophic changes that encouraged evolution.
C) confirmation of Lamarck's theories.
D) enormous lengths of time required for geologic events.
E) proof of several sites of creation.

Question

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Lyell's ideas on the geologic history of the earth provided Darwin with evidence that enormous lengths of time were required for geologic events, which helped him develop his theory of evolution by natural selection.

The Value to Darwin of Lyell's Ideas on the Geologic