What does Darwin’s controversial book, On the Origin of Species by Means of Natural Selection illustrate?

Darwin's book introduced the scientific theory that populations evolve over the course of generations through a process of natural selection. The book presented a body of evidence that the diversity of life arose by common descent through a branching pattern of evolution.

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Tu tienes u pito chico pendejo

Yes they should do if insurance denys claim they have a back up to prove why procedure was medically necessary