Question

Amirah uses a thick blanket when sleeping during cold weather. What is the function of the blanket?

Answer 1

Answer:

The purpose of the blanket is to control the rate of heat loss. Our bodies work best within a certain narrow temperature range. Humans are native to the tropics, and only in the tropics does the temperature remain within that comfort range for a naked human all year long. So, we use clothing, blankets, heat sources such as fire, and buildings to allow us to function in cold temperatures. A thick blanket blocks more heat loss than does a sheet, so we commonly use both in the winter.