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27 October, 17:42

What is the main organ of the circulatory system?

arteries

veins

heart

capillaries

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Answers (2)
  1. 27 October, 18:03
    0
    your heart is the main organ of the circulatory system
  2. 27 October, 20:48
    0
    The heart are the main organ.

    arteries, veins and capillaries are the one that travels blood around the body
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