To reduce the risk of drowning. You are prone to drowning without the assistance of a floatation device.
Answer:
shivering
Explanation:
the movement of your muscles creates friction between them, which produces heat, thus warming our bodies up.
It would be impossible to feel them move because they are moving to slow for us to realize it. Well, that is what I think.
Answer:
liver
tissues:
Liver tissue consists of a mass of cells tunneled through with bile ducts and blood vessels. Hepatic cells make up about 60 percent of the tissue and perform more metabolic functions than any other group of cells in the body.