organisms change over time
The guiding principle of geology is uniformitarianism as established in the writings of Lyell.
Sir Charles Lyell
Charles Lyell, an English geologist, published Principles of Geology in the 1830s to expand James Hutton's theory of gradualism into the theory of uniformitarianism, which replaced catastrophism as the favored theory of geologic change.
Darwin learned that if the Earth could change over time, life could change over time as well. He realized it would have taken many, many years for life to change in the way he suggested.
Lyell
organisms change over time
organisms change over time
organisms change over time
organisms change over time
Lyell's book "Principles of Geology" influenced Darwin by introducing him to the idea of gradual changes in Earth's landscape over long periods of time. This concept sparked Darwin's thinking about how species could also change over time through natural selection, which eventually led to the development of his theory of evolution.
Charles Lyell
Darwin read "Principles of Geology" by Charles Lyell during his voyage on the Beagle. This book influenced Darwin's thinking on the gradual change of landscapes over time, which later contributed to his theory of evolution by natural selection.
The guiding principle of geology is uniformitarianism as established in the writings of Lyell.
Sir Charles Lyell
Charles Lyell is well known for inventing the theory of geology. He was originally a British lawyer before writing "Principles of Geology".
Darwin's observations supported Lyell's theory of ancient earth because he theorized that geology evolves the same way animals did!
AnswerCharles Lyell, lawyer and geologist who developed the theory of uniformitarianism in geology is commonly recognised as the one person who had the most profound influence on Darwin. Captain Fitzroy with whom Darwin sailed on his famous voyage on the Beagle, gave Darwin a copy of Lyell's 'Principles of Geology'. It is difficult to say who had the second greatest influence, but certainly his grandfather Erasmus Darwin, who himself wrote on Evolution had a great influence.