The ileocecal valve prevent the back flow of materials from the large intestine to the ileum of the small intestine.
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Although first discovered within the nucleus of eukaryotic cells, nucleic acids are now known to be found in all life forms including within bacteria, archaea, mitochondria, chloroplasts, and viruses
Answer:is storing potential energy
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Answer:
I'd say the answer is B. reflection of waves off smooth walls
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