IB ESS 1.2.2 Systems approach
IB ESS 1.2.2 Systems approach

IB Environmental Systems and Societies syllabusESS SL/HLFirst assessment 2026
Practise using a systems approach to trace inputs, outputs, storages and flows in ecological, social and resource-management contexts.
How this is tested
- identify inputs and outputs in a food, water or ecosystem diagram
- construct or interpret a simple systems diagram with storages and flows
- explain how understanding ecosystem interactions supports resource management
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