1.

Shivering in cold is a method forA. Prevention of radiation of heat from the bodyB. Production of healthy muscle frictionC. Production of heat by muscular contractionsD. Increasing blood supply to skin

Answer» Correct Answer - C
"Shivering with cold" in winter is caused by a quick involuntary reaction of striated muscles. It yields, not a mechanical work but only some heat just to warm the body.


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