Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
6th Edition
ISBN: 9780134555430
Author: Colleen Belk, Virginia Borden Maier
Publisher: PEARSON
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Chapter 15, Problem 1LTB
Summary Introduction

To write:

The labels of the figure that follows, which illustrates the predicted pattern of changes in human population growth rates when death rates fall.

Introduction:

The birth rate is the number of live births in a particular time and the death rate is the number of the people deceased in a particular time. In humans, it is observed a decrease in the rate of death has been followed by a drop in the rate of birth. The speed of this adjustment contributes to determining future population growth.

Expert Solution & Answer
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Explanation of Solution

The changes in the population are termed as the demographic transition. The growth rate of the population is determined by subtracting the death rate from the birth rate.

In the given graph, in the beginning, the death and birth rates are high and the population growth is constant. Then in the demographic transition, the birth rates remain the same but the death rate falls. Then in the graph, the birth rate drops and the death rate remains constant.

A labeled population growth curve is shown below.

Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition), Chapter 15, Problem 1LTB

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