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Which sequence of human body structures is ordered from most complex to simplest?
O
A. heart cells, heart tissue, heart, circulatory system
B. circulatory system, heart, heart cells, heart tissue
o
C. circulatory system, heart, hobart tissue, heart cells
D. heart tissue, heart cells, heart, circulatory system

Respuesta :

judypolzin0

Answer:

A

Explanation:

Heart cells are complex to find

Heart tissue is somewhat easy to find

Heart circulatory system is easy to find

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