📝 Exam Summary: Human impact on biodiversity
Key Idea: Human activity is driving a sixth mass extinction, through both direct and indirect impacts.
⚠️ Threats to biodiversity
📋 IUCN Red List
Tip: For an IUCN criterion use a directional word — 'declining population', not just 'population'. Invasive species harm natives by competition, predation and disease.
Key Idea: HL: biodiversity hotspots and Key Biodiversity Areas concentrate endemic species; conservation there is most efficient but raises law (HL.a), economics (HL.b — e.g. palm oil) and ethics/justice (HL.c — indigenous land) tensions.