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IB ESS HL 4.2.3 Water-Supply Increase Needs Question Bank

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

Syllabus
First assessment 2026
Course
ESS HL
Level
HL

Exam points

  • identify the hydrological store, flow or water-management issue
  • apply the relevant water-cycle or scarcity concept
  • evaluate the consequence and trade-offs using evidence

4.2.3—Water supply increase needs 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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