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All body systems work together and are interdependent. For example, the circulatory system and the respiratory system are interdependent, because without oxygen, your heart is unable to pump blood, and without blood, your respiratory system cannot transfer oxygen. The nervous system and the immune system are interdependent because the brain signals when the immune system should activate, and the nervous system would eventually die off from infection or a virus without the immune system to protect it.

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14y ago
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15y ago

respiratory system and circulatory system

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Q: Which two body systems work together?
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