IB ESS HL 1.2.13 Models Questions
Practise HL questions by evaluating how population, energy-flow, conservation and productivity models simplify systems and support predictions.
- Syllabus
- First assessment 2026
- Course
- ESS HL
- Level
- HL
Exam points
- Analyse how population models inform planning, policy and resource management.
- Evaluate quantitative energy and matter models when judging sustainability in named food systems.
- Assess ecosystem models for conservation through food webs, flows, biodiversity and species needs.
- Critique productivity pyramids using prediction, comparison, data accuracy and simplification limits.
IB ESS HL 1.2.13 Models Questions question 1
Figure 1: Three projections for world population from the present day to 2100.
The chart shows three projections for world population to 2100. The lines represent high, medium and low population estimates.
Outline one advantage of modelling future human population sizes.
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