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circulatory system
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🔒 Closed 5 Hearts
DID YOU KNOW? 💭 Worms have 5 hearts Worms don't have just one heart. They have FIVE! But their hearts and circulatory system aren't as complicated as ours -- maybe because their blood doesn't have to go to so many body parts. The heart of worms functions in almost the same manner as a human...- Beatriz9
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- biology circulatory system hearts worms
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- Forum: 💬 Chitchat