Which of the following can have an affect on rate and/or depth of respiration? Select all that apply.

Chemical- carbon dioxide, hydrogen ions and oxygen levels are the most important factors that regulate respiration.

Chemical- carbon dioxide, hydrogen ions and oxygen levels are the most important factors that regulate respiration. ... If CO2 levels increase, the respiratory center( medulla and pons) is stimulated to increase the rate and depth of breathing.

Explanation:

the answer is c a tornado