Extinction

The extinction of the dinosaurs is one of the most well-known mysteries in our great world, the Earth has its history in the layers, these layers can tell us when, where, and how something happened, the K-T boundary is no exception. These large slabs of Earth can show us the past, millions of years of history, to the beginning. What scientists around the world are trying to figure out, is why the dinosaurs died out, there are many different and unique theories about the K-T extinction. Some…

composition by Stephen Jay Gould, the hypotheses of dinosaur extinction are intermingled with the all-consuming thoughts and dilemmas that plague much of the modern society, including: sex, drugs, and violence; as well as one great unknown- how dinosaurs became extinct. Gould adds the public’s lust for outré, controversial statements with real, scientific inferences. Plaguing the world with questionability, the explanation for the dinosaurs’ extinction is still unidentified, but Gould…

could completely dismantle an entire species, let alone a body of dinosaurs. Consequently, the debacle on the causes of dinosaur extinction have baffled the minds of paleontologists for centuries. Geologist and zoologist Stephen Jay Gould published “Sex, Drugs, Disasters, and the Extinction of Dinosaurs,” to compare scientific and speculative causes of dinosaur extinction. This passage is highly informative and enjoyable. Gould provides three theories-- sex, drugs, and disasters-- that…

Did one single disaster cause the K-T extinctions? Some scientists and people are committed to just one reason the K-T extinctions occurred but in this paper many possibilities will be explored with evidence to back up why they could have been a cause as well to the extinctions. Everyone will ultimately make his or her own decision/thoughts on what could have happened, and of course all hypotheses would be subject to analysis. Asteroid impact theory. The impact of a 10 km+ asteroid would blow a…

Extinction is a type of new learning in which an individual receives non-reinforcement of a previously reinforced response. In classical conditioning extinction occurs when there are repeated presentation of the CS without the US. In instrumental conditioning, the presentation of a reinforcer when the response occurs is stopped, causing a decrease in conditioned responding. Extinction occurs when an expected US, or reinforcer, is omitted therefore the decrease in conditioned responding is due to…

Just Keep Swimming Loggerhead sea turtles, like other animals, were not always on the verge of extinction. By morphing the Earth’s environment, human actions have allowed extinction to become a major issue. Animals, nowadays, go extinct because of humanity’s irresponsible actions, such as pollution and deforestation. While there has been an increase in awareness, the “management actions and their evaluation for sea turtles are still frequently hindered by lack of key data on turtle biology,…

place with aversive connotations generates a fear memory associated to a context; however, when the same place becomes safe, after reexposure, an extinction memory is generated (LeDoux, 2000). Therefore, both the fear and the extinction memory are evoked by the same context, and after some time, the fear memory usually persists and overcomes the extinction memory (Sotres-Bayon et al., 2006; Ji and Maren, 2007). This phenomenon, designated as spontaneous recovery of fear, is an increasing problem…

The Extinction of Homelessness As 2016 begin to come to an end. Most families in America are focusing on the presidential election, planning year end events or even establishing resolutions for the new year. While the invisible part of most cities population is faced with regular pivotal decision. How will I survive a brutal winter without proper housing? On the surface this may appear to be an uncomplicated matter, to the casual, but it is genuinely a painstakingly complicated matter.…

but a wide range of other species such as replies and birds became extinct. It is doubtful that only one virus can affect such wide range of species [6]. As there is no evidence to support this argument, ill cannot be a significant cause for the extinction of…

have put the Neanderthal race in danger and eventually cause the extinction of the Neanderthal…