IB ESS 1.2.13 Models
IB ESS 1.2.13 Models

IB Environmental Systems and Societies syllabusESS SL/HLFirst assessment 2026
Practise using models such as food webs, systems diagrams and projections to explain, predict and evaluate environmental change.
How this is tested
- evaluate strengths and weaknesses of a food web as a model
- explain how ecosystem models support species conservation decisions
- apply quantitative models to assess sustainability or future population change
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