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2 Beginner
3 Intermediate
Question 1 of 5
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★★☆ Intermediate
What is the primary advantage of a mammalian double circulatory system compared to a single circulatory system, especially for active mammals with high metabolic demands?
A
It prevents the mixing of oxygenated and deoxygenated blood in the arteries.
B
It ensures that blood flows through the heart only once per complete circuit of the body.
C
It allows for higher pressure to body tissues and lower pressure in delicate lung capillaries.
D
It reduces the overall volume of blood required to circulate throughout the body.