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Did Lamarck and Darwin agree about the origin of species diversity?
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No, Lamarck and Darwin did not agree about the origin of species diversity. Darwin theorized that evolution was driven by the fittest animals surviving and passing their genes on. Lamarck theorized that animals' responses to needs in their life would influence the growth of their offspring. So Lamarck and Darwin did not agree about the origin of species diversity. They had different theories about the origin of species diversity.