critically endangered
Noun

level of conservation between "endangered" and "extinct in the wild."
endangered species
Noun

organism threatened with extinction.
resource
Noun

available supply of materials, goods, or services. Resources can be natural or human.
subspecies
Noun

(subsp.) group of organisms within a single species, often distinguished by geographic isolation.
vulnerable species
Noun

level of conservation between "near threatened" and "endangered." Vulnerable is the lowest of the "threatened" categories.
  • Credits

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    Director

    Tyson Brown, National Geographic Society

    Author

    National Geographic Society

    Program Specialists

    Sarah Appleton, National Geographic Society
    Margot Willis, National Geographic Society

    Producer

    Clint Parks

    Production Managers

    Gina Borgia, National Geographic Society
    Jeanna Sullivan, National Geographic Society

    Last Updated

    Jan. 15, 2020

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