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A4.2.8—EDGE of Existence programme Topic Practice

A4.2.8—EDGE of Existence programme Topic Practice
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise explaining how the EDGE of Existence programme prioritises species using extinction risk and evolutionary distinctiveness.

How this is tested

  • describe why species with few close relatives may be prioritised for conservation action
  • explain how EDGE links global endangerment with loss of evolutionary history
  • interpret map or species evidence to justify inclusion in the EDGE programme
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