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Peristalsis is the contraction and relaxation of the walls of the alimentary canal(gullet) and (small intestine) to allow solid food material to move down the canal.
Through the process of peristalsis, solid waste food material (faeces) are eliminated out of the body hence it's role in excretion.
prince the mathematics expert answered the question on January 12, 2020 at 03:56
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