Question

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

Answer 1

A

Step-by-step explanation:

Heart cells are complex to find

Heart tissue is somewhat easy to find

Heart circulatory system is easy to find