asked 147k views
5 votes
In a human body, which of the following represents the highest level of structural organization?

A An atom in the lung.
B Lung tissue
C The lungs
D The respiratory stystem

asked
User Norutan
by
8.5k points

1 Answer

6 votes
D because it's a system and it starts at the atom in the lung then tissues and...
answered
User Greg Ostry
by
7.5k points
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