the respiratory system includes a layer of cells in the air passage that clean the air before it gets to the lungs. this layer of cells if best classified as

This layer of cells is best classified as a tissue.

Explanation:

When a group of cells comes together to perform a specific function, they are called tissues. It's when a group of tissues comes together to perform a specified function that they become an organ.

your mom.com . : 0000

fe 55.85 g/mol and h2o 18.02 g/mol.