IB ESS 1.2.7 System scales

IB Environmental Systems and Societies syllabusESS SL/HLFirst assessment 2026

Practise matching environmental systems to local, ecosystem and global scales, from small habitat stores to whole-Earth processes.

How this is tested

classify a system by scale, from a bromeliad habitat to a rainforest or global circulation
link the chosen scale to suitable stores, flows and boundaries in an ESS system

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