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3 votes
The combination of a heart,arteries,veins,and capillaries is

A. CELL

B. an organ system

C. organism

D. tissue ​

User Udexter
by
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2 Answers

1 vote

Answer:

the answer should be blood vessels in the cell

so practically it should be A. cell

User Sourcx
by
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2 votes

Answer

n organ system.

User Benjith Kizhisseri
by
7.8k points
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