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Which one of the following is a characteristic of open circulatory systems but NOT closed circulatory systems?

lover567

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Which one of the following is a characteristic of open circulatory systems but NOT closed circulatory systems?

Which one of the following is a characteristic of open circulatory systems but NOT closed circulatory systems?
A) a heart
B) a vascular system
C) blood
D) open-ended blood vessels

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DDALE0911

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Just got PERFECT on my quiz

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