IB ESS SL 1.2.14 Model Limitations Questions

Practise SL questions on model limitations by judging simplification, unreliable inputs, changing conditions and uncertain environmental predictions.

Syllabus
First assessment 2026
Course
ESS SL
Level
SL

Exam points

  • Explain food-web model strengths and weaknesses: visible relationships, predictions and omitted information.
  • Explain why changing biotic or abiotic conditions can make model-derived maximum sustainable yield unreliable.
  • Outline how approximation, incomplete data and changing conditions reduce projection reliability.
  • Interpret ozone model projections cautiously when behaviour, new substances or policy compliance may change.
  • Evaluate age–gender pyramids by weighing planning value against simplified or incomplete demographic data.

IB ESS SL 1.2.14 Model Limitations Questions question 1

[Maximum number: 1]
Observed and projected changes in global stratospheric ozone

Figure:Observed and projected changes in global stratospheric ozone

Key:
- Annually averaged data
- Average of atmospheric model projections

Outline one factor that may affect the reliability of the model projections in the stratospheric-ozone chart shown above.

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