Respuesta :
Answer:
celllular level, chemical level, organ level, and organ system level
Explanation:
Organ system level is the is the smallest and simplest in the levels of organization.
What is Organ system level?
- It is one of the smallest and simplest levels of organization in which includes:
- atoms
- molecules
- organelles
- cells
- tissues
- organs
- organ systems
- and the human organism.
So, Organ system level is referred as the smallest and simplest in the levels of organization. (option c)
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