1.the largest organ in the body that serves as bareir of the body againts germs.
2.part of the digestive systemthat cuts the food it5o smaller pieces.
3.the rhythmic muscular movement that moves the food to the next.
4.the layee of the skin where muscle fiber are found.
5.this system consist of spinal cord and brain.
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Answer:
4the layee of the skin where muscle fiber are found
Explanation: