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Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry
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The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?
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Which of the following was a social cost associated with the development of the internal combustion engine used in most cars? a. people were able to use their horses for new tasks. b. new jobs were created. c. blacksmiths needed to gain new skills to continue working. d. families were able to travel farther more easily.
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Why can differences in mitochondrial dna be used as derived characters?...
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