Biology · Life Processes (Circulation)
Which observation best supports the statement that humans have double circulation of blood?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Oxygenated and deoxygenated blood mix in the heart
- 2Blood passes through the heart twice in one complete circulation✓
- 3The right side of the heart pumps oxygenated blood
- 4Blood flows only once through the heart in one complete cycle
Correct answer
Blood passes through the heart twice in one complete circulation
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