Atherosclerosis is the narrowing of the artery because of plaque buildup. Arteriosclerosis is the stiffening or hardening of artery walls.
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Answer:
Almost 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium. All 11 are necessary for life.
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