Problem 1: Describe the stressors to humans present at high altitude, and then provide one example of each: acclimatory adjustment, developmental adjustment, and adaptation to high altitude.
Problem 2: Describe the thermal stressors to humans present in very cold and very hot temperatures. Then provide one example of an acclimatory adjustment and one example of an adaptation to cold temperatures.
Problem 3: Describe the relationships between skin color and ultraviolet (UV) radiation. Identify one hypothesis as to why light skin should be found in northern latitudes, and one hypothesis as to why dark skin should be found closer to the equator.