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The beating of your heart is caused by _____. valves opening and closing contraction of heart blood moving through the heart relaxation of the heart
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Aug 22, 2017
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The beating of your heart is caused by _____.
valves opening and closing
contraction of heart
blood moving through the heart
relaxation of the heart
Biology
high-school
Shailesh Sonare
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Shailesh Sonare
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Answer:
I think it is B
Kuldeep Dubey
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Aug 24, 2017
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Kuldeep Dubey
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B is your answer hope this helps
Wenger
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Aug 25, 2017
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Wenger
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