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A4.2.3—Anthropogenic species extinction

Anthropogenic extinction occurs when human activities such as overhunting, habitat change, and resource exploitation eliminate species and alter food webs.

Syllabus
First assessment 2025
Objective
A4.2.3
Level
HL

Concept essentials

  • Anthropogenic extinction is extinction caused by human activities.
  • Overhunting can eliminate vulnerable species when removal exceeds population recovery.
  • Habitat change and resource use can add indirect extinction pressure.
  • Loss of one species can alter food-web structure and ecosystem function.
ConceptIB Biology HL