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IB ESS 7.1.3 Natural income

IB ESS 7.1.3 Natural income
IB Environmental Systems and Societies syllabusESS SL/HLFirst assessment 2026

Practise linking natural income to yields and services such as fish, timber, water supply and flood protection in named systems.

How this is tested

  • explain natural income as the yield from natural capital in a lake, forest or delta
  • use water inputs and outputs, or resource data, to state available natural income
  • link harvests and services to whether human use keeps natural capital intact
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