embryology , similarities between the emobryos appearance, adaption, a characteristic that improves the ability to survive, survival of the fittest, a process where individuals best suited for their environment survive and reproduce, vestigial structures, a structure in an organism that doesn't serve a purpose, analogous structure, a structure in an organism that serves a purpose, homologous structure, structures with different forms and purposes for different organisms, harmful mutation, a mutation that can decrease chances of survival for an organism, beneficial mutation, a mutation that can increase chances of survival for the organism, selective breeding, artificial selection, charles darwin, a scientist who came up with the idea of natural selection, evolution, a process where organisms evolve from ancestors over time, natural selection, a process where inherited traits get passed on.

Evolution

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