advantages of closed circulatory system
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Answers:A closed system allows higher metabolic rates because there is better control over the delivery of oxygen, glucose, and other nutrients to the specific areas that are active. It also allows better control of fluids when the animal is injured.
Answers:looks to me like all of the above.
Answers:In a closed circulatory system the blood travels around the organism in vessels. This allows it to travel faster and therefore cells get nutrients and waste removal quicker. In an open system (like an arthropod) the blood travels slower.