Evolution, How an organism changes over time by the forces of environmentand genetics, Homologous Structures, Structures derived from a common ancestor that evolved, Vestigial Structures, Structures that once had a purpose but no longer do, Superposition, Using the sequential position of layers to date organisms, Comparative Anatomy, A side by side of body structures, Comparative Embryology, A side by side of early stages of develoment, Charles Darwin, A naturalist famous for his theory of Natural Selection, "On the Origin of Species", Book written by Charles Darwin, Galapagos Islands, Island visited by C.D., Fossils, The remains of animals preserved in rock, Overproduction, A fish that has millions of eggs, Competition, Two birds fighting for the same tree, Speciation, Two organisms which can not mate anymore, Reproduction, Passing on their traits, Camouflage, How animals use their color to hide

Evolution

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