Order of organisms in terms of their appearance on earth ?
Hi, do you have a list of specific organisms to order - or are you interested just in the general progression of things?
This question was taken from this link: http://www.chacha.com/question/which-is-the-correct-order-of-organisms-in-terms-of-their-appearance-on-earth. And the answer provided was: Biologists generally regard the universality and ubiquity of the genetic code as definitive evidence in favor of the theory of universal common descent for all bacteria, archaea, and eukaryotes.
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