On the Origin of Species

Darwin| Charles

Charles Darwin's revolutionary 1859 work presenting the theory of evolution by natural selection. Drawing on years of observations from the Galapagos and beyond, Darwin argues that species are not…

397 chunks indexed · 30 topics · 6 themes

Topics

divine intervention 349 natural selection 85 geological record 36 extinction of species 31 geographical distribution 30 natural selection mechanisms 28 embryological characters 27 descent with modification 17 geographical distribution of species 16 reproductive systems 16 struggle for existence 15 correlation of growth 14 conditions of life 13 struggle for life 12 rudimentary organs 11 intermediate links 11 glacial epoch 11 geographical changes 11 domestic productions 11 variation in domesticated organisms 10 modified descendants 10 distinct species 9 competition and struggle for existence 9 theory of natural selection 8 intermediate varieties 8 adaptation of organisms to environments 8 secondary sexual characters 8 divergence of character 8 common ancestor 8 systematic affinity 7

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