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extinction

/ɪkˈstɪŋ(k)ʃn/

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"
- ▪ the process of a particular thing ceasing to exist: "he joined the chorus of those predicting the extinction of newsprint"
- ▪ the wiping out of a debt: "a private debt extinction fund"
- 2. reduction to zero in the intensity of light or other radiation as it passes through a medium, due to absorption, reflection, or scattering: "ultraviolet extinction"
Word Origin late Middle English: from Latin exstinctio(n-), from exstinguere ‘quench’ (see extinguish).
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en.wikipedia.org › wiki › ExtinctionExtinction - Wikipedia

en.wikipedia.org › wiki › Extinction
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2 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.
www.britannica.com › science › extinction-biologyExtinction | Definition & Examples | Britannica

www.britannica.com › science › extinction-biology
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Jul 1, 2024 · Extinction is the dying out or extermination of a species, which can occur 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.
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What is extinction in biology?
The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Adam Augustyn. Extinction, in biology, is the dying out or extermination of a species. It occurs when species are diminished because of environmental forces (natural or human-made) or because of evolutionary changes in their members.

Extinction | Definition & Examples | Britannica

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What causes extinction of a species?
Extinction occurs when species are diminished because of environmental forces (habitat fragmentation, global change, natural disaster, overexploitation of species for human use) or because of evolutionary changes in their members (genetic inbreeding, poor reproduction, decline in population numbers).

Extinction | Definition & Examples | Britannica

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What is mass extinction?
Although extinction is an ongoing feature of Earth’s flora and fauna (the vast majority of species ever to have lived are extinct), the fossil record reveals five unusually large extinctions, called mass extinction events, each involving the demise of vast numbers of species.

Extinction | Definition & Examples | Britannica

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What is an extinction event?
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.

Extinction event - Wikipedia

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en.wikipedia.org › wiki › Extinction_eventExtinction event - Wikipedia

en.wikipedia.org › wiki › Extinction_event
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5 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.
www.theatlantic.com › science › archiveThe Awkward Truth About Extinction - The Atlantic

www.theatlantic.com › science › archive
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16 hours ago · Extinction studies is a relatively young field, still filled with great debates over the contours of causation; mountain-building and massive volcanism may have played some role in the pulses of ...
Top stories
- Club saved from 'brink of extinction' given refresh
  Yeovil Olympiads Athletic Club in Somerset was at risk of closure, before Yeovil Town Council approved budget proposals - including a large tax rise - to help save it. The arena has now been "futureproofed", with the latest in technology and servicing by British Gas, in a bid to reduce running costs.
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  6 hours ago
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www.britannica.com › animal › dinosaurDinosaur - Extinction Causes, Evidence, & Theory | Britannica

www.britannica.com › animal › dinosaur
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4 days ago · Dinosaur - Extinction Causes, Evidence, & Theory: The mass extinction of dinosaurs 66 million years ago remains a misconception; the fossil record shows that dinosaurs were already in decline during the late Cretaceous.
phys.org › news › 2024-07-evidence-mounting-humansThe evidence is mounting: Humans were responsible for the ...

phys.org › news › 2024-07-evidence-mounting-humans
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Jul 1, 2024 · The debate has raged for decades: Was it humans or climate change that led to the extinction of many species of large mammals, birds, and reptiles that have disappeared from Earth over the past...
www.britannica.com › science › K-T-extinctionK–T extinction | Overview & Facts | Britannica

www.britannica.com › science › K-T-extinction
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4 days ago · 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.