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Nuclear war is an often-predicted cause of the extinction of humankind. [1]Human extinction is the hypothetical end of the human species, either by population decline due to extraneous natural causes, such as an asteroid impact or large-scale volcanism, or via anthropogenic destruction (self-extinction), for example by sub-replacement fertility.
End-Jurassic (Tithonian) 145 Ma. No longer regarded as a major extinction but rather a series of lesser events due to bolide impacts, eruptions of flood basalts, climate change and disruptions to oceanic systems [16] Pliensbachian-Toarcian extinction (Toarcian turnover) 186-178 Ma.
Lake Toba is the resulting crater lake. The Toba eruption (sometimes called the Toba supereruption or the Youngest Toba eruption) was a supervolcanic eruption that occurred about 74,000 years ago during the Late Pleistocene [ 2 ] at the site of present-day Lake Toba in Sumatra, Indonesia. It was the last in a series of at least four caldera ...
The largest extinction was the Kellwasser Event (Frasnian - Famennian, or F-F, 372 Ma), an extinction event at the end of the Frasnian, about midway through the Late Devonian. This extinction annihilated coral reefs and numerous tropical benthic (seabed-living) animals such as jawless fish, brachiopods, and trilobites.
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.
This was compared against climate reconstructions for the last 90,000 years. The researchers found correlations of human spread and species extinction indicating that the human impact was the main cause of the extinction, while climate change exacerbated the frequency of extinctions. The study, however, found an apparently low extinction rate ...
1926 [ 415 ] Extermination campaign. The Great Plains wolf has been later determined to be continuous morphologically [ 410 ] and genetically [ 416 ] with the still existing Mexican wolf, which would use the name C. l. nubilus if placed in the same subspecies, due to being the older one. Red-moustached fruit dove.
Human evolution is the evolutionary process within the history of primates that ... lasted for about 117,000 years and brought human ancestors close to extinction." ...