An interaction of systems allows for the body to warm itself when it is cold. which processes the body warm up when it is cold? check all that apply.
a. shivering
b. sweating
c. hair on body laying flat
d. goosebumps forming hair on body standing up

this is multi choice

The answer would be A. shivering because it is a bodily function in response to early hypothermia or just feeling cold in warm-blooded animals(or humans). When the core body temperature drops, the shivering reflex is triggered to maintain homeostasis. Skeletal muscles begin to shake in small movements, creating warmth by expending energy.
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