Which location shows where the SOUTHERN hemisphere would have the LONGEST NIGHTS (more hours of darkness)? * Location 1
Location 2
Location 3
Location 4

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.

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?