1. Which part of the human body is more complex, the heart or the circulatory system. Explain your answer. (5pts)
2. Why do you think it is important for you to study the levels of biological organization?
please pa answer na po need na po kasi ung matino nmn po
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Answer:
1The heart is central to the circulatory system as it is the fist-sized pump that circulates the blood throughout the body. As animals became more complex and multicellular, the circulatory system evolved because simple diffusion was insufficient to supply all of the cells with nutrients.
2?