Which of the parts of the circulatory system has the highest concentration of oxygen? nts take place in leaves. Lungs P. Left Right! Heart S R Body and limbs (A) P and Q (C) Rand P (B) Q and S (D) S and R
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Explanation:
The Pulmonary vein blood vessel carries oxygenated blood from the lungs back to the heart. Therefore, it carries the highest concentration of oxygen.
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