Biology · Animal Physiology
When the environmental temperature falls, the hairs on mammalian skin erect (goosebumps). What is the primary physiological benefit of this response?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Cold temperatures make the chemical structure of hair stiff.
- 2It directly increases the layer of subcutaneous fat.
- 3It is purely a behavioral change to scare predators.
- 4The trapped layer of air acts as an insulator to prevent heat loss.✓
Correct answer
The trapped layer of air acts as an insulator to prevent heat loss.
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