Onlar yok olma tehdidi altında. - They are in danger of extinction.
Şimdi onlar hakkında konuşmayı değil dillerimizi yok olmaktan kurtarmayı istiyoruz. - Now we want to save our languages from extinction, not talk about them.
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
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"
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
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 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of radiation as a consequence of absorption and radiation no longer in existence; "the extinction of a species" no longer active; extinguished; "the extinction of the volcano
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
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
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