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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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The demographic transition model predicts a decline in population during the ______ stage.

  1. a. preindustrial
  2. b. transitional
  3. c. industrial
  4. d. postindustrial

Summary Introduction

Concept introduction: The demographic transition model describes how changes occur in the population growth often during the four stages of economic development. The four stages of economic development are preindustrial, transitional, industrial, and post-industrial. These demographic transition studies depend on the factors like lowest fertility rates, infant mortality, and highest life expectancy.

Explanation

Reasons for correct statements:

 Demographic transition model predicts that the economic development may slow the population growth. Some of the developed countries remain in the earliest stage of their demographic transition.

Option d. is given as “postindustrial stage”. During the postindustrial stage, birth rate falls below the death rate. Therefore, the population size slowly decreases and becomes negative. Based on the social changes, the birth rate declines, leading to the fall of population size. Hence, the option d. is the correct answer.

Reasons for incorrect answers:

Option a. is given as “preindustrial”. During preindustrial stage, living conditions are widespread. Thus, both the birth rates and death rates are high, leading to the fall of growth rate...

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