'Origin of species' was published in

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'Origin of species' was published in 1859.
On the Origin of Species utilizing Natural Selection, a groundbreaking scientific work by British naturalist Charles Darwin is published in England on 24^th November 1859.
Darwin's theory argued that organisms gradually evolve through a process he called “natural selection”. The book presented a body of evidence that the diversity of life arose by common descent through a branching pattern of evolution.