Biology
Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 43.5, Problem 1HYEW
Summary Introduction

To determine:

Why childbirth is so difficult.

Introduction:

Earlier, head of the newborn babies was smaller due to the poor nutrients. But now, the women’s hip has evolved wider so that large headed infants would be easily squeezed out.

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