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Liula [17]
4 years ago
8

Most arthropods and some mollusks and tunicates have ______ circulatory systems, which means fluid transporting nutrients and ox

ygen flow directly into internal organs.
A. closed
B. nonexistent
C. open
Biology
2 answers:
BaLLatris [955]4 years ago
6 0

I think the answer is closed


photoshop1234 [79]4 years ago
5 0
I believe the correct answer is "A. closed"
 

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