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Charles Darwin. Engraving of Charles Robert Darwin (1809-1882), British naturalist, aged 40. Darwin studied medicine & theology but his inter- est was in natural history. He was a naturalist on a five year voyage around the world during 1831- 36. This provided the data for his book, Origin of Species (1859). His theory of natural selection suggested that natural variation in a species creates a wide range of individual traits, some more useful than others. Competition to survive causes favourable traits to survive and so a species evolves. Though not the first person to suggest evolution, Darwin was the first to construct a proper scientific argument to prove it.
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