Task: Question Answering
Input (English): Process:  -He air we breathe contains oxygen and other gases -Once in the lungs, oxygen is moved into the bloodstream and carried through your body -At each cell in your body, oxygen is exchanged for a waste gas called carbon dioxide -Your bloodstream then carries this waste gas back to the lungs where it is removed from the blood stream and then exhaled -Your lungs and respiratory system automatically perform this vital process, called gas exchange -
 Question: What is the effect of more carbon dioxide is produced on more waste gas goes back into the lungs.?
Output (English): for