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The voyage of the beagle
Charles darwin goes on to explore the world and encounters different species. He documents it and goes on to form and develop his theory for evolution -
Journal of researches
This book was the first and raw version of what would be later be called his book Voyage of the beagle. The book goes on to talk about the many things that charles darwin saw during his time on the beagle which would later develop his theory of evolution. -
A monograph on the fossil Balanidae and Verrucidae of Great Britain [Vol. 2]
This book goes on to talk about the other specimens that he studies and goes on to further his theory on evolution. He collected samples from other naturalists and used them and wrote it for his book. -
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Charles Darwin publishes his theory on evolution
Charles Darwin published theory of evolution on November 24, 1859. The theory of evolution basically states that all species are related and gradually change and adapt overtime. The theory goes on to state that evolution goes on through natural selection. Basically stating, species have to survive and if they can't, they will die out. If they can not adapt to change, natural selection occurs and the species dies out.