Onların dillerini yok olmaktan kurtarmak için yerli Amerikalılara yardım etmek istiyorum. - I want to help Native Americans to save their languages from extinction.
Dinozorların aniden yok olmaları hakkında birçok teori var ama gerçek sebep hâlâ belirsiz olarak kalmaktadır. - There are many theories about the sudden extinction of the dinosaurs, but the real cause still remains anyone's guess.
A process for weakening behavior to its preconditioning level In the respondent model, it consists of continuous presentation of the conditioned stimulus without the unconditioned stimulus In the operant model, it consists of withholding reinforcement after the response is emitted
The dying out of a species of living thing, and its complete disappearance from the earth
complete annihilation; "they think a meteor cause the extinction of the dinosaurs"
The procedure in a conditioning experiment where the unconditioned stimulus or the reinforcer is no longer presented (Anderson)
a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus complete annihilation; "they think a meteor cause the extinction of the dinosaurs"
The apparent dimming of star or planet when low on the horizon due to absorption by the Earth's atmosphere
the attenuation of light due to scattering and absorption as it passes through a medium
The act of extinguishing or making extinct; a putting an end to; the act of putting out or destroying light, fire, life, activity, influence, etc
The termination of any lineage of organisms, from subspecies to species and higher taxonomic categories from genera to phyla Extinction can be local, in which one or more populations of a species or other unit vanish but others survive elsewhere, or total (global), in which all the populations vanish When biologists speak of the extinction of a particular species without further qualification, they mean total extinction1
is when a species of any animal, plant or creature is no longer found alive Back to Mammal main page
a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
Disappearance of a species from all or part of their geographic range Also see background extinction and mass extinction
the act of extinguishing; causing to stop burning; "the extinction of the lights"
complete disappearance of a species because of failure to adapt to environmental change
If someone refers to the extinction of a way of life or type of activity, they mean that the way of life or activity stops existing. The loggers say their jobs are faced with extinction because of declining timber sales. Dying out or termination of a species. It occurs when a species can no longer reproduce at replacement levels. Most past extinctions are thought to have resulted from environmental changes that the doomed species was either unable to adapt to or that caused it to adapt so thoroughly that it became a distinctly new species. The effect of humans on the environment, through hunting, collecting, and habitat destruction, has become the principal factor in plant and animal extinctions
the reduction of the intensity of radiation as a consequence of absorption and radiation no longer in existence; "the extinction of a species"
The extinction of a species of animal or plant is the death of all its remaining living members. An operation is beginning to try to save a species of crocodile from extinction
the act of extinguishing; causing to stop burning; "the extinction of the lights" a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus complete annihilation; "they think a meteor cause the extinction of the dinosaurs" the reduction of the intensity of radiation as a consequence of absorption and radiation no longer in existence; "the extinction of a species" no longer active; extinguished; "the extinction of the volcano
reduction in the intensity of the light (the number of photons) from a celestial body as the light passes through a dust cloud Dust clouds in space make stars behind the dust clouds appear dimmer than they would be if the dust was not there
Reinforcement is withheld from a previously reinforced behavior and therefore the behavior decreases The goal of withholding reinforcement is to decrease the target behavior
The total disappearance of a species of plant or animal Most widely known is the extinction of the dinosaurs
The failure of a taxonomic group to produce direct descendants, causing its worldwide disappearance from the record at a given point in time
Dying out or termination of a species. It occurs when a species can no longer reproduce at replacement levels. Most past extinctions are thought to have resulted from environmental changes that the doomed species was either unable to adapt to or that caused it to adapt so thoroughly that it became a distinctly new species. The effect of humans on the environment, through hunting, collecting, and habitat destruction, has become the principal factor in plant and animal extinctions
The rapid dying off of a large percentage of all animal species in a comparatively short period of time 65.5 million years ago. This coincides with the end of the Cretaceous period, and may have been caused by an impact event
a plant or animal species may entirely cease to exist Recent examples are the dodo, a large flightless bird which used to live as recently as two hundred years ago, on the island of Mauritius There are today many species of birds, flowers, fish, insects, large mammals, including certain types of whale, which are threatened with extinction, most as a result of human activity Happily, the smallpox virus is about to become extinct
volcanos; permanently inactive; "an extinct volcano" of a fire; being out or having grown cold; "threw his extinct cigarette into the stream"; "the fire is out" no longer in existence; lost or especially having died out leaving no living representatives; "an extinct species of fish"; "an extinct royal family"; "extinct laws and customs
Extinction is a natural process that has occurred throughout the history of life on earth The significant difference in today's world is the rate of extinction Between 1600 - 1850 scientists documented only five animal extinctions - or one animal every 30 years Since 1850 the rate of global extinction has escalated to at least one animal every 2 15 years
means that an animal or plant no longer exists on earth Millions of animal and plant species have already died out and some scientists estimate that about six species a minute become extinct Extinction is a natural process that humans have unnaturally accelerated through our activities including cutting down the forests, building towns and cities and roads
refers to a species that no longer exists Local extinction occurs when every member of a particular population has died Global extinction occurs when every member of a species has died The passenger pigeon and the dodo are examples of globally extinct birds
n: A catastrophic, widespread -- often global -- event in which major groups of species are wiped out over a relatively short period when compared to normal ( background ) extinction rates There have been five major mass extinctions, of natural causes (in at least one case due to an asteroid impacting the earth), in the earth's history We are now entering a sixth great mass extinction, this time of unnatural causes human activities
The sudden disappearance in the fossil record of a large number of species of life, to be replaced by new species in subsequent layers Mass extinctions are indications of catastrophic changes in the environment, such as might be produced by a large impact on the Earth
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