Task: Question Answering
Input (English): Process:  -You breathe oxygen into your body through the nose or mouth -The oxygen travels to the lungs through the windpipe -The air sacs in the lungs send the oxygen into the blood stream -The carbon dioxide in the blood stream is transferred to the air sacs -The lungs expel through the nose or mouth back into the environment.
 Question: What is the effect of the lungs are healthy on carbon dioxide can not be transferred to the air sacs.?
Output (English): for