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Endangered species, by major families, 2017

Source: The International Union for Conservation of Nature (IUCN), “Red List of Threatened Species”, www.iucnredlist.org

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The International Union for the Conservation of Nature (IUCN) records and assesses threatened living species. Even within the different kingdoms of living organisms (animal, vegetable, and fungi), each class presents a very varied number of threatened species. Nevertheless, these are systematically above 13% (with the exception of green algae). Among all vertebrates, amphibians are the most threatened (32%). Among invertebrates, it is worms and spiders (82% and 68%). Among plants, it is mosses, flowers, and ferns (75%, 52%, and 51%) as well as lichens and fungi (77 %).

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