The pulmonary vein differ from the other veins in the body because it carries oxygenated blood whereas other veins carried deoxygenated blood
Which means that the pulmonary vein carried out the blood to the entire body as a source for metabolism
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It does not produce pollution in the air and it creates more energy than fossil fuels. Hope this helps!w
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A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.