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Red Data Book

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A global list (Red List) of endangered and threatened species, which is produced and regularly updated by the World Conservation Union (IUCN). It contains colour‐coded information sheets arranged by species: red for species that are endangered, amber for vulnerable, white for rare, green for out of danger, and grey for species that are indicated to be endangered, vulnerable, or rare but with insufficient information to be properly classified. The three main groups of categories are threatened, unknown, and not threatened.

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