<span>peristalsis is the involuntary, progressive, rhythmic contraction of the muscle in the wall if the esophagus propelling a ball of food down toward the stomach</span>
Answer:
e
Explanation:
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Answer A. If the tectonic plates continually move then they change earth’s crust constantly.
A. The hosts body could reject the transplanted stem cells
But planning and maintaining But first you can help to prevent some of the most serious environmental land and aquatic habitations reduce the quality of water for human consumption buffers protect the environment
