Human groups vary physiologically in the ability to cope with extremes of both temperature and

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Human groups have varying physiological adaptations that allow them to cope with extremes of temperature and altitude. Some of these adaptations include differences in body size and composition, skin color, and the ability to regulate body temperature. Similarly, populations living at high altitudes have evolved adaptations to deal with the reduced oxygen availability, such as larger lungs and more efficient oxygen utilization.

Human Groups Vary Physiologically in the Ability to Cope with Extremes