2 Support for Evolution Fossils Remains or traces of organisms found in sedimentary rock.Provide an incomplete record of changes that have occurred in organisms and in the climate.
3 Support for Evolution Fossils Dating a fossil: Relative Dating Gives an estimated date based on ages of rock layers above and below the fossil.Radioactive DatingGives an exact date by comparing the amount of radioactive element in a rock with the amount of the stable element.
4 Support for Evolution Embryology Study of the development of embryos (earliest stage of a life form).Example:All vertebrates at some point have both gills and a tail.
5 Support for Evolution Homologous Structures: Structures that are similar in structure and origin (and sometimes function).Example:Human arm, bat wing, and a dolphin flipper.
6 Support for Evolution Vestigial Structures Structures that appear to have no function.Examples:Appendix, pelvic bones of snakes and whales.
7 Support for Evolution DNA Similarities in DNA can suggest similar ancestry.
8 Support for Evolution Direct Observations: Antibiotic resistant, selective breeding