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Author Question: Which of the following is characteristic of most extant reptiles and most extant (Read 529 times)

federox

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on: Aug 8, 2013
Which of the following is characteristic of most extant reptiles and most extant mammals?
A) ectothermy
B) diaphragm
C) shelled eggs
D) keratinized skin
E) conical teeth that are relatively uniform in size


theo

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Reply #1 on: Aug 10, 2013
Answer has to be D, trust me!


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