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The fact that most birds and mammals sleep even if it puts them at risk suggests thatA) sleep serves an important physiological function.B

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January 5th, 2018

The fact that most birds and mammals sleep even if it puts them at risk suggests thatA) sleep serves an important physiological function.B) sleep serves a cognitive function.C) people should sleep as much as they can.D) all of the aboveE) both B and C

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