The 14 "eight-thousanders[?]", 8,000 m or higher, all in the Himalayas:
By continent:
Europe
Asia
North America
South America
Africa
Oceania
Antarctica
Mars
See also: Mountain range, List of mountain ranges, List of volcanoes
... and then to an enzyme called NADP+ reductase[?] which uses them to drive the reaction NADP+ + H+ + 2e- → NADPH This consumes the H+ ions produced by the ...