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Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail
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Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.
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Changes of state occur when there is change in a. thermal energy b. electromagnetic energy c. chemic...
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