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Questions and Answers List

Question	Answer
a historical timeline of a species	fossils
the deeper the fossil the older it is	relative dating
estimates a fossils age by the amount of radioactive carbon isotope in the fossil, the less there is the older it is	radioactive carbon isotope dating
some scientist theorize that the similarities organisms share as embryos suggest that they all evolved from one common ancestor	embryology
similar bone structures that have different functions, some scientists argue that these structures aren't similar enough to prove a common ancestor	homologous structures
theorized to be left over structures that that are no longer needed for survival	vestigial structures
bone structures that have the same functions but don't look similar	analogous structures
humans didn't evolve from this animal	apes
appendix, human hair, tailbone, tonsils, goosebumps, hiccups, dolphin/whale pelvic bone	human vestigial structures
blue and red footed	boobie