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- 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"
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.
Oct 19, 2023 · Extinction is the dying out of a species. Extinction plays an important role in the evolution of life because it opens up opportunities for new species to emerge.
Jun 1, 2024 · 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. Learn more about mass extinctions and modern extinctions.
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.
Dec 24, 2023 · At least five times, a biological catastrophe has engulfed Earth killing off the vast majority of species. As scientists say we’re in a sixth mass extinction, what can we learn from the past?
Sep 26, 2019 · At least a handful of times in the last 500 million years, 75 to more than 90 percent of all species on Earth have disappeared in a geological blink of an eye in catastrophes we call mass ...
May 29, 2019 · Extinction is a natural phenomenon: After all, more than 90 percent of all organisms that have ever lived on Earth aren’t alive today. But humans have made it worse, accelerating natural...
Feb 5, 2019 · Extinction happens when environmental factors or evolutionary problems cause a species to die out. The disappearance of species from Earth is ongoing, and rates have varied over time.
Jan 13, 2021 · 10 min read. What We’ve Lost: The Species Declared Extinct in 2020. Dozens of frogs, fish, orchids and other species—many unseen for decades—may no longer exist because of humanity’s destructive...
Extinction is the complete disappearance of a species from Earth. Species go extinct every year, but historically the average rate of extinction has been very slow with a few exceptions.
