IB ESS 5.1.1 Soil as dynamic system
IB ESS 5.1.1 Soil as dynamic system
Practise modelling soil as an open dynamic system with inputs, outputs, storages and flows that affect ecosystems and land use.
How this is tested
- draw or interpret soil flow diagrams showing leaching, decomposition and mineral storage
- identify inputs, outputs or transfers in a soil horizon using systems terminology
- explain how human activity alters soil stores, vegetation cover and erosion risk