Question: The two-chambered heart of some backboned aquatic animals is part of their:\nOptions:\n- (A) aerobic capacity\n- (B) three-chambered heart\n- (C) biological diversity\n- (D) it keeps an organism warm\n- (E) the body's largest organ\n- (F) circulatory system\n- (G) salmon\n- (H) swimming system
Let's be accurate as possible and think step-by-step.
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Fish have a circulatory system with a two-chambered heart. Fish are backboned aquatic animals. Some backboned aquatic animals have a circulatory system with a two-chambered heart.
The answer: (F).
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