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Which sequence of human body structures is ordered from most complex to simplest?

A. heart cells, heart tissue, heart, circulatory system
B. heart tissue, heart cells, heart, circulatory system
C. circulatory system, heart, heart cells, heart tissue
D. circulatory system, heart, heart tissue, heart cells

User Regeme
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2 Answers

7 votes
D. Circulatory system, heart, heart tissue, heart cells
User Angoru
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D: circulatory system, heart, heart tissue, heart cells.
User Ves
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