When the body is cold, an interaction of systems allows the body to warm itself. Which of these help the body warm itself when it is cold? Check all that apply.shiveringsweatinghair on body lying flatgoosebumps forminghair on body standing up

Shivering produces heat through repeated muscle contractions. When goosebumps form, hairs stand up; in furry animals, raised hair traps insulating air and helps reduce heat loss, though this effect is small in humans. Sweating cools the body, and hair lying flat does not help it stay warm.

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