Term Part of Speech Definition Encyclopedic Entry criteria Plural Noun
set of standards or rules.
to put at risk.
endangered species Noun
organism threatened with extinction.
Encyclopedic Entry: endangered species International Union for the Conservation of Nature (IUCN) Noun
environmental organization concerned with preserving natural ecosystems and habitats.
total number of people or organisms in a particular area.
person who studies a specific type of knowledge using the scientific method.
vulnerable species Noun
level of conservation between "near threatened" and "endangered." Vulnerable is the lowest of the "threatened" categories.