Please answer the following question: Fact 1: Fish have a circulatory system with a two-chambered heart. Fact 2: Birds also have four-chambered hearts. Given the two facts above, answer the question "What aspect is different for Bird and fish hearts" with the following options: - circulatory systems - matter vibrating - tissue - it keeps an organism warm - members of their own species - heat produced - blood - type of organs
Answer:
circulatory systems