Blood circulation in a mammal is said to be double because?
BIOLOGY
JAMB 2021
Blood circulation in a mammal is said to be double because?
- A. it passes twice through the heart in a complete circuit
- B. it moves in both arteries and veins
- C. it circulates in both the heart and other organs
- D. the heart contains auricles and ventricles
Correct Answer: A. it passes twice through the heart in a complete circuit
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