Final answer:
Respiratory distress changes to respiratory failure when the body is no longer able to maintain adequate oxygen levels and remove carbon dioxide from the blood.
Step-by-step explanation:
Respiratory distress changes to respiratory failure when the body is no longer able to maintain adequate oxygen levels and remove carbon dioxide from the blood. Respiration is the process by which the body takes in oxygen and releases carbon dioxide through breathing. In respiratory distress, the person may have difficulty breathing and low oxygen levels, but the body is still able to compensate and maintain basic functions. However, in respiratory failure, the body is unable to adequately oxygenate the blood, leading to organ dysfunction and potential death.