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IB ESS 2.1.8 Niche
IB Environmental Systems and Societies syllabusESS SL/HLFirst assessment 2026

Practise describing ecological niches through resource use, biotic interactions, abiotic conditions and field sampling evidence.

How this is tested

  • describe a field method using quadrats, transects or baseline surveys to study a niche
  • link abiotic and biotic conditions to the role and resource needs of a species
  • estimate abundance data for a food chain or habitat using sampled area evidence
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