In the small intestines, a process called aids in mixing. during this process the contents move along the tract.

Segmentation;do not

Explanation:

The food that we ingest through mouth and the food moves from mouth to esophagus and then from esophagus to intestine followed by stomach.

Segmentation can be defined as the contraction that occurs in large and small intestine. In this process contraction moves the chyme in both directions which allows a better of the secretions with the chyme. This process do not takes place along the tract.

The correct answers are segmentation and do not.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.