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Biology, 23.10.2020 15:40 24elkinsa

Feel the back of your skull. Go ahead, feel it! You may feel a small bump, below which is an opening where the spinal cord enters your skull. The relocation of this opening toward the bottom of the skull is significant in evolutionary biology. Why

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Feel the back of your skull. Go ahead, feel it! You may feel a small bump, below which is an opening...
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