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.

the volume increases

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?