IB ESS HL 1.2.14 Model Limitations Questions

Practise HL questions on model limitations by evaluating approximation, data quality, external change and the uncertainty of environmental projections.

Exam points

Evaluate food-web models by weighing visible links and predictions against omitted relationships and quantities.
Analyse how variable biotic and abiotic conditions can undermine a model-based maximum sustainable yield.
Assess how approximation, incomplete inputs and changing conditions constrain environmental projections.
Evaluate ozone projections against omitted factors, new substances, behaviour and policy compliance.
Assess age–gender pyramids by weighing snapshot and planning uses against data and future-change uncertainty.

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Study 1.2.14—Model limitations conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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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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IB ESS HL 1.2.14 Model Limitations Questions question 1