IB ESS HL 8.1.4 Global Population Growth Models Questions

Practise IB ESS HL 8.1.4 by applying global population growth models concepts to environmental systems questions.

Syllabus
First assessment 2026
Course
ESS HL
Level
HL

Exam points

  • The global human population has followed a rapid growth curve
  • Models are used to predict the growth of the future global human population
  • UN projection models indicate three scenarios linked to future fertility rates
  • There is uncertainty about how future human fertility rates may change, leading to the three scenarios in the models

IB ESS HL 8.1.4 Global Population Growth Models Questions question 1

[Maximum number: 3]
Figure: World population figures, 1950–2019, and predictions for 2020–2100

Figure:World population figures, 1950–2019, and predictions for 2020–2100

Figure: Countries and regions where population decreased by at least 1% between 2010 and 2019

Figure:Countries and regions where population decreased by at least 1% between 2010 and 2019

Question (a)

(a)

Using Figure: World population figures, 1950–2019, and predictions for 2020–2100, identify the year in which the median prediction of the world population will reach 10 billion.

[ 1 ]

Question (b)

(b)

Outline one reason for the uncertainty in predicting the world's population in

Figure: World population figures, 1950–2019, and predictions for 2020–2100.

[ 1 ]

Question (c)

(c)

Using Figure: Countries and regions where population decreased by at least 1% between 2010 and 2019, identify the region that has the most countries with a decrease in the percentage change in population between 2010 and 2019.

[ 1 ]
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