The Three Gorges Dam on the Yangtze River in China is the world’s largest hydroelectric generating station. The dam is 2.3 km long and 101 m high, with a reservoir that floods 632 km2 of land. The dam provides electricity to nine provinces in China. Is the electricity the dam provides worth the problems it causes?

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.