Fossils - Remains of life from an earlier time, A types of fossils - Molds, casts, trace and true form fossils., Evolution - A gradual change in hereditary features over time, Factors of Natural Selection - Overproduction, competition and variation, Relative Dating - Comparing layers of sedimentary rock (top—younger,bottom—older), Absolute Dating - Measures radioactive decay in igneous rocks gneous rocks, Geologic Time Scale - Organizes Earth's history in 3 major Eras, Charles Darwin - Theory of evolution natural selection and Galapagos Islands (finches, tortoises, iguanas, Homologous Structures - Body parts of organisms that are similar in structure and position (ex. bone arrangements) but differ in function, Analogous Structures - Body parts that perform a similar function but differ in structure, Vestigial Structures - Body parts that have lost their original function through evolution, Developmental Biology - Embryology and Pharyngeal pouches, Molecular Biology - Comparing sequences to see how closely related organisms are. Analyzing DNA can be most useful for organisms that are distantly related. Organisms that are more similar would have similar genes and proteins.,

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