extinction

  • 141 extinction coefficient — noun : the sum of the absorption coefficient and the scattering coefficient for a medium that both absorbs and scatters radiation …

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  • 142 extinction meter — noun : an exposure meter that indicates the intensity of light usually by gradually attenuating the light until a selected design (as a number superimposed on a ground glass screen) is barely visible or disappears completely …

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  • 143 Permian–Triassic extinction event — …

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  • 144 Late Devonian extinction — …

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  • 145 Ordovician–Silurian extinction event — …

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  • 146 Crise d'extinction — Extinction massive Une extinction massive est un événement au cours duquel une proportion significative des espèces animales et végétales présentes sur la Terre disparaît. Elles ont souvent été l occasion de transitions entre des formes de vie… …

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  • 147 Cretaceous–Tertiary extinction event — Artist s rendering of bolide impact Badlands nea …

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  • 148 Human extinction — is the end of the human species. Various scenarios have been discussed in science, popular culture, and religion (see End time). The scope of this article is existential risks. Humans are very widespread on the Earth, and live in communities… …

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  • 149 Quaternary extinction event — Late Pleistocene landscape of northern Eurasia The Quaternary period saw the extinctions of numerous predominantly larger, especially megafaunal, species, many of which occurred during the transition from the Pleistocene to the Holocene epoch.… …

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  • 150 Holocene extinction — The dodo, a bird of Mauritius, became extinct during the mid late seventeenth century after humans destroyed the forests where the birds made their homes and introduced mammals that ate their eggs. The Holocene extinction refers to the extinction …

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  • 151 Holocene extinction event — [ thumb|right|150px|The Dodo, a bird of Mauritius, became extinct during the mid late seventeenth century after humans destroyed the forests where the birds made their homes and introduced animals that ate their eggs.] The Holocene extinction… …

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  • 152 Espèce en danger critique d'extinction — Liste rouge de l UICN Statut de conservation le risque d extinction Extinction Éteintes Menacées En danger de disparition Menacée …

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  • 153 Background extinction rate — Background extinction rate, also known as ‘normal extinction rate’, refers to the standard rate of extinction in earth’s geological and biological history before humans became a primary contributor to extinctions. This is primarily the pre human… …

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  • 154 Ecological extinction — Types and definitions of extinctions = Estes, Duggins, and Rathburn (1989) recognize three distinct types of extinction.Global extinction is defined as “the ubiquitous disappearance of a species. [Estes et al. The ecology of extinctions in kelp… …

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  • 155 Countdown to Extinction — Pour les articles homonymes, voir Countdown to Extinction (homonymie). Countdown to Extinction Album par Megadeth Sortie 14 juillet 1992 …

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  • 156 Olson's Extinction — was a mass extinction that occurred 270 million years ago in the Early Guadalupian of the Permian period and which predated the Permian–Triassic extinction event.[1] Contents 1 …

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  • 157 Vortex d'extinction — En écologie, et dans l étude de la dynamique des populations, la notion de tourbillon d extinction, spirale d extinction ou vortex d extinction (« Extinction vortex » pour les anglophones) correspond à une catégorie de modèles utilisés… …

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  • 158 Latent extinction risk — In conservation biology, latent extinction risk is a measure of the potential for a species to become threatened.Latent risk can most easily be described as the difference, or discrepancy, between the current observed extinction risk of a species …

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  • 159 Countdown To Extinction — Pour les articles homonymes, voir Countdown to Extinction (homonymie). Countdown to Extinction Album par Megadeth Sortie 14 juillet 1992 …

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  • 160 Countdown to extinction — Pour les articles homonymes, voir Countdown to Extinction (homonymie). Countdown to Extinction Album par Megadeth Sortie 14 juillet 1992 …

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