Answer:
The direction the blood takes through the circulatory system is important because it makes sure that the nutrients and blood gets to every organ and vein in our body. the direction the blood flows is this. Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart. so we can be the living breathing people we are today.
Explanation:
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The correct answer is Organism.
Nucleic Acids are made up of repeating units called Nucleotides
Red bone marrow. Oxygen and carbon dioxide bind to different parts of the hemoglobin
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The answer for that question is a