BIOL CNCPTS & INVEST. LOOSE W/ACCESS
BIOL CNCPTS & INVEST. LOOSE W/ACCESS
3rd Edition
ISBN: 9781259967597
Author: Hoefnagels
Publisher: MCG
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Chapter 31, Problem 17WIO
Summary Introduction

To search:

The Internet for hypothesis about why humans and other animals yawn; then design an experiment to test one of the hypotheses.

Concept introduction:

Yawning is also a type of non-respiratory air movement. When one yawns, he/she takes in a deep breath of air.

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