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Which is an organ? heart circulatory system blood muscle tissue
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3 votes
Which is an organ?

heart
circulatory system
blood
muscle tissue

User Adam Roben
by
7.8k points

2 Answers

5 votes

Answer:

heart !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11

Step-by-step explanation:

User Calfater
by
8.0k points
2 votes

Answer:

Heart

Step-by-step explanation:

User AaRiF
by
8.4k points
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