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Extinction - Wikipedia. Contents. hide. (Top) Examples. Definition. Pseudoextinction. Lazarus taxa. Causes. Genetics and demographic phenomena. Genetic pollution. Habitat degradation. Predation, competition, and disease. Coextinction. Climate change. Sexual selection and male investment. Mass extinctions. Modern extinctions.
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- 32 orchid species in Bangladesh—One of the first papers of 2020 to report any extinctions announced the probable loss of 17 percent of Bangladesh’s 187 known orchid species.
- Smooth handfish (Sympterichthys unipennis)—One of the few extinctions of 2020 that received much media attention, and it’s easy to see why. Handfish are an unusual group of species whose front fins look somewhat like human appendages, which they use to walk around the ocean floor.
- 65 North American plants—This past year researchers set out to determine how many plants in the continental United States had been lost. They catalogued 65, including five small trees, eight shrubs, 37 perennial herbs and 15 annual herbs.
- 22 frog species—The IUCN this year declared nearly two dozen long-unseen Central and South American frog species as “critically endangered (possibly extinct)”—victims of the amphibian-killing chytrid fungus.
Feb 5, 2019 · Learn what extinction is, how it happens, and why it matters. Explore the history and causes of mass extinctions, and the current threats to biodiversity.
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Apr 23, 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.
Oct 19, 2023 · Learn about the process and causes of extinction, the dying out of a species, and its role in evolution. Explore the history of five mass extinctions and the current threat of a sixth one due to human activities.
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May 29, 2019 · Learn about the different categories and concepts of extinction, from critically endangered to extinct in the wild, and how humans have accelerated species loss. See photos and stories of animals that are at risk or have disappeared from the wild.
Sep 26, 2019 · Learn about the five major mass extinctions in Earth's history, from the Ordovician to the Cretaceous, and how they shaped life on our planet. Find out what triggered these catastrophic events and how they compare to the current extinction crisis.
