During Darwin's voyage on the Beagle, his thinking was greatly influenced by
A) James' Principles of Psychology.
B) Lyell's Principles of Geology.
C) Malthus' Principle of Population.
D) Spencer's Principles of Biology.

Question

Quizplus · Accepted Answer

Darwin was greatly influenced by Lyell's Principles of Geology, which proposed that the Earth was much older than previously believed and that geological processes occurred over long periods of time. This idea allowed Darwin to consider the possibility that species could gradually change over time through natural selection.

During Darwin's Voyage on the Beagle, His Thinking Was Greatly