Answer:
A. circulation
Explanation:
the heart is the central organ of the circulatory system. As the heart beats, it pumps blood through a system of blood vessels. the heart along with the circulatory system constitutes the circulatory system. The movement of blood through the heart and the body is called <em>circulation</em>.
A.Every hour on the hour,regardless of whether the indicator alerts you or not.
Answer:
They make proteins by combining.
Explanation:
Amino acids build muscles, cause chemical reactions in the body, transport nutrients, prevent illness, and carry out other functions.
Essential amino acids: Definition, benefits, and foodswww.medicalnewstoday.com › articles
