Answer:
D: Health care and public health are not mentioned in the United States Constitution thus the states generally have considerable authority in these areas.
Explanation:
Individual states have different laws governing healthcare and public health in them, and so anyone moving from one state to the other, has to fulfill the laws of the destination state if they want to practice in that state.
The second statement best explains the type of blood vessel and the function of these vessels' valves - <span>These are veins, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
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Veins are large blood vessels which carry blood back to the heart. <span>Veins have a system of valves to prevent back-flow.</span>
the way you feel and what u think about yourself
Explanation:
i think everyone has personal bias
<h3>The blood in the pulmonary artery is going to the heart to collect oxygen, and therefore has a low content of oxygen. So, the blood in the pulmonary artery is a violet colour because it has low oxygen. The blood in the pulmonary vein is oxygen rich, and so it gives a scarlet</h3>
