Which lists three units of an organ system in order from the simplest to the most complex? red blood cell → heart → tissue skeleton → bone → bone cell muscle cell → muscle tissue → stomach lung tissue → lung → circulatory system

The correct answer is muscle cell → muscle tissue → stomach

The organization of human body starts from the simplest level and ends at the complex level.

It starts from cell→ tissues→organ →organ system→body. The cell is known as the basic structural and functional unit of life.

Then the cells combine to form tissue and the tissues combinely form organ system.

apes

explanation:

evolution theory

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