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30 May, 05:47

When does the circulatory system work with the respiratory system?

a - during cellular respiration

b - during blood cell formation

c - during intestinal digestion

d - during a viral infection

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Answers (2)
  1. 30 May, 06:12
    0
    B - during blood cell formation
  2. 30 May, 06:14
    0
    It is during breathing so cellular respiration
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