Topic 45Biology

20.4 Conservation

Sustainable resources defined as those produced as rapidly as they are removed so they do not run out. Forests and fish stocks as the two Cambridge-named resources that can be conserved and managed sustainably. Six causes of organisms becoming endangered or extinct: climate change, habitat destruction, hunting, overharvesting, pollution and introduced species. Four conservation methods for endangered species: monitoring and protecting species and habitats, education, captive breeding programmes, and seed banks (e.g., Svalbard Global Seed Vault). HL extensions on forest + fish stock specific conservation, AI/IVF in captive breeding, and genetic-variation risks in small populations covered in Lesson 2.