A-LevelBiologyBiodiversity and conservationOct/Nov 2025Paper 4 Q611 Marks
The distribution of the large blue butterfly, Phengaris arion, extends across Europe and Asia. It is assessed by the International Union for Conservation of Nature (IUCN) on the Red List™™ as 'Near Threatened' globally and 'Endangered' in Europe. In Europe, P. arion became extinct in the Netherlands in 1964 and in the United Kingdom in 1979. [Figure 6.1] lists the conservation status categories in the IUCN Red List™™. [Figure 6.2] shows P. arion. (a)(i) Explain how IUCN Red List™™ assessments help to conserve biodiversity.
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