What term refers to a species that is close to extinction throughout its range?

The term "Endangered Species" specifically describes a species that is at a high risk of extinction throughout its entire range. This classification is used in environmental science and conservation to denote species whose population numbers have decreased significantly and that face threats such as habitat destruction, pollution, overexploitation, or climate change. Endangered species require immediate conservation efforts to help recover their populations and prevent them from becoming extinct.

In contrast, "Threatened Species" refers to those that are likely to become endangered in the foreseeable future, indicating a less immediate risk of extinction compared to endangered species. "Vulnerable Species" are at risk of becoming endangered in the medium term. "Extinct Species" refers to species that no longer exist at all. Each of these terms represents a different level of risk, with endangered species being the most critical in the context of conservation efforts.