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How does exercise help the cardiovascular system? O It weakens the heart. O It slows the heartbeat. O It changes hormone levels. O It increases the oxygen in the blood.
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How does exercise help the cardiovascular system? O It weakens the heart. O It slows the heartbeat. O It changes hormone levels. O It increases the oxygen in the blood.
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Dec 16, 2023
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How does exercise help the cardiovascular system?
O It weakens the heart.
O It slows the heartbeat.
O It changes hormone levels.
O It increases the oxygen in the blood.
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It would be option 4
NicoD
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Dec 19, 2023
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NicoD
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