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*Fossil Records - [[Fossil]]s of ancient creatures shows how their features gradually changed over millions of years. [[Fossil]]s of [[Extinction|extinct]] creatures show similar features to some current living creatures. This is the case of dinosaur [[fossil]]s and modern [[bird]]s.
*[[DNA]] - The [[DNA]] of different [[species]] shows how they are related to one another and can be used to trace the features of a common ancestor. This is the case for [[human]]s and other [[Great Ape|great apes]].
*[[Antiobiotic Antibiotic Resistance]] - Since the invention of [[antibiotic]]s it has been observed that [[bacteria]] have '''evolved by natural selection''' to become immune to the effects of the [[antibiotic]]s.