Proton pumps within the electron transport chain transport h+ ions

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Why do mountaineers become breathless as they reach high altitudes

What are some of the immune functions of the lymphatic system? a. cleaning red blood cells from the blood and creating lymph fluids b.transporting lymph to the tissues and creating lymph fluids c.removing infectious agents and making white blood cells d.making red blood cells and removing infectious agents