Question

what is the main function of the respiratory system? to bring oxygen to the body to remove oxygen from the body and deliver carbon dioxide to provide oxygen and remove carbon dioxide from the body to break down food and absorb nutrients

Explanation:

The respiratory system's main function is gas exchange. It takes in oxygen (needed for cellular respiration) and expels carbon dioxide (a waste product of cellular respiration).

Answer:

to provide oxygen and remove carbon dioxide from the body