Final answer:
Three events in Darwin's life that contributed to his idea of how life evolved are the findings of Charles Lyell, his observations during the Voyage of the Beagle, and the collaboration with Alfred Russel Wallace.
Step-by-step explanation:
Three events in Darwin's life that contributed to his idea of how life evolved are:
- The findings of Charles Lyell: Lyell's writings taught Darwin about geology, paleontology, and the changing Earth. This influenced Darwin's understanding of the Earth's age and the concept of a constantly changing Earth.
- Observations during the Voyage of the Beagle: Darwin observed fossils of sea life high in the mountains, suggesting a changing Earth. He also discovered fossils of extinct mammals, which indicated that organisms change over time.
- Alfred Russel Wallace: Wallace developed a similar theory of evolution by natural selection and presented it alongside Darwin. This collaboration helped solidify and spread the theory of evolution.