What do you think are the two or three most significant challenges the human body faces at very high altitudes? Give your reasons for choosing these. Choose one part of the body from the diagram. Explain (1) how altitude causes a problem for that body part; (2) the symptoms produced; and (3) how to relieve the problem. Think about how the human body regulates itself. What do you think might be happening in the body that results in the symptoms you listed above?
