IB ESS SL 4.2.3 Water Supply Increase Needs Questions

Evaluate when population, industry or agriculture create pressure to increase supply.

Syllabus
First assessment 2026
Course
ESS SL
Level
SL

Exam points

  • explain how population growth, agriculture, industry and domestic demand increase pressure on water resources
  • use data and calculations to quantify water demand and link increasing extraction or pollution to scarcity, conflict and ecosystem impacts
  • evaluate water-supply pressures by weighing resource availability, sustainability, pollution and competing human and environmental needs

IB ESS SL 4.2.3 Water Supply Increase Needs Questions question 1

[Maximum number: 3]
Figure: Water transfers and transformations after rainfall in forest and urban environments

Figure:Water transfers and transformations after rainfall in forest and urban environments

Figure: Global water demand by sector for 2014 and projections for 2025 and 2040

Figure:Global water demand by sector for 2014 and projections for 2025 and 2040

Question (a)

(a)

Calculate the percentage of water projected to be used for agriculture in 2025, shown in Figure: Global water demand by sector for 2014 and projections for 2025 and 2040.

[ 1 ]

Question (b)

(b)

Outline two reasons why water demand shown in Figure: Global water demand by sector for 2014 and projections for 2025 and 2040 is projected to increase globally from 2014-2040.

[ 2 ]
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