move in a circle on a central axis.
D. all of the above because
Repair of damaged tissue.
Growth of an organism.
Replace old and dying cells.
Answer:
c. mars has a thin atmosphere
Explanation:
i hope that helps even though its a few days late
<span>The purpose of villi is to i</span><span>ncrease surface area for purposes of absorption. The answer to your question is C.</span>