Task: Question Answering
Input (English): Process:  -Air enters the nose or mouth and travels through the windpipe into the lungs -The lungs have a series of smaller and finer tubes and sacs -Air reaches the smallest and finest air sacs called alveoli -Oxygen travels from the alveoli into the blood -Oxygen-rich blood is carried to the heart -Oxygen-rich blood is pumped throughout the body by the heart -Cells take in the oxygen rich blood and release carbon dioxide rich blood -The carbon dioxide rich blood travels to the lungs -Carbon dioxide travels through the throat and is exhaled.
 Question: What is the effect of less oxygen in the environment on a greater amount of oxygen being delivered to the blood stream.?
Output (English): against