Question

the human body is made up of different systems that work together to carry out the functions needed for life. one of these necessary functions is breathing. the following systems help move air in and out of the body. apply what youve learned about the organization of the human body to order these systems from the simplest to the most complex. simplest system epithelial cell, which helps form the lining of the lungs human, which is made up of multiple interacting organ systems lungs, which expand and contract to move air in and out epithelial tissue, which protects the lungs from pollutants respiratory system, which brings oxygen into the bloodstream and removes carbon dioxide

Explanation:

The biological organization hierarchy is cell - tissue - organ - organ system - organism. An epithelial cell is a single cell, epithelial tissue is made of multiple cells, lungs are an organ, the respiratory system is an organ system, and a human is an organism.

Answer:

epithelial cell, epithelial tissue, lungs, respiratory system, human