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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