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Jun 1, 2024 · Extinction is the dying out or extermination of a species due to environmental or evolutionary factors. Learn about the different types of extinction, the causes of human-induced extinction, and the current mass extinction event from Britannica's experts.
3 days ago · Extinction is the termination of a taxon by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively.
2 days ago · An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth. Such an event is identified by a sharp fall in the diversity and abundance of multicellular organisms.
- DictionaryEx·tinc·tion/ikˈstiNG(k)SH(ə)n/
noun
- 1. the fact or process of a species, family, or other group of animals or plants becoming extinct: "preventing the extinction of this unique frog will require the restoration of ponds and surrounding habitats"
- 2. reduction in the intensity of light or other radiation as it passes through a medium or object, due to absorption, reflection, and scattering: "ultraviolet extinction"
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Proposed causes for the extinction of dinosaurs have included everything from disease, heat waves, cold spells, faunal changes, and an asteroid collision during the K–T boundary.
May 29, 2024 · K–T extinction, a global extinction event responsible for eliminating approximately 80 percent of all animal species about 66 million years ago. It was characterized by the purging of many lines of animals that were important, including nearly all of the dinosaurs and many marine invertebrates.
- The Editors of Encyclopaedia Britannica
22 hours ago · The Cretaceous–Paleogene ( K–Pg) extinction event, [a] also known as the Cretaceous–Tertiary (K–T) extinction, [b] was a sudden mass extinction of three-quarters of the plant and animal species on Earth, [2] [3] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.
5 days ago · Extinction of animals and plants. Read scientific research on the dinosaur extinction, future mass extinctions, and endangered species. What can be done?
