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Dna and rna share a number of similarities,but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna
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Which of the following happened during the precambrian era? the first prokaryotic cells the first eukaryotic cells development of photosynthesis all of the above
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Under which of the following circumstances would natural selection not operate on an organism
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At the beginning of the virtual lab, you were asked to sort eight lizards into categories. what criteria did you initially use to make your groups? did you revise your criteria later? why?
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Suppose you used an electron microscoe to take a picture of the external view of a cell membrane. If...
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