Answer:
13. is Option J) all of the above
and 14 I'm not completely sure but I think its option D.
Answer:
The three layers of smooth muscle consist of the outer longitudinal, the middle circular, and the inner oblique muscles. Construction of these muscles helps mix and break the contents into a suspension of nutrients called chyme and propels it into the duodenum.
The answer to this is mechanic energy.
Answer:thousands of kelvins
Explanation: just got it right on test
