Question: Fact 1: Fish have a circulatory system with a two-chambered heart. Fact 2: Fish are backboned aquatic animals. Given the two facts above, answer the question "The two-chambered heart of some backboned aquatic animals is part of their:" with the following options: - aerobic capacity - three-chambered heart - biological diversity - it keeps an organism warm - the body's largest organ - circulatory system - salmon - swimming system
Answer:
circulatory system