Process:  - Air travels into the body - Air reaches the lungs - The lungs absorb the oxygen from the air - The oxygen is transported by hemoglobin - Red blood cells are made of hemoglobin - Blood has a lot of red blood cells - The heart moves the blood throughout the body - Blood can bring the oxygen to different cells in the body.  Perturbation hypothesis: suppose there has been a large loss of blood happens, how will it affect the blood will carry less oxygen.  Does the supposed perturbation have an effect (direct or indirect) on the process?
Answer:
yes