PPT-Near Extinction Of Humans.

Toba the super volcano is considered an unknown phenomenon of the world It erupted around 74000 years ago and nearly made the entire human population extinct It has erupted explosively a number of times over the past 12 millions years on the island of Sumatra in Indonesia. ASTR 1420. Lecture. 9. Sections : 4.6, 6.4, 11.3. Mass Extinctions in the Earth History. Mass Extinctions. Check . http://en.wikipedia.org/wiki/Impact_event. http://en.wikipedia.org/wiki/Mass_extinction. EVOLUTION AND EXTINCTION. A TROPICAL MURDER MYSTERY. Finding the missing birds of Guam. A TROPIAL MURDER MYSTERY. . Finding the missing birds of Guam. 12. At the end of this chapter you will know:. Michelle Letendre, Evan Wise, Chance Snow, Mary James, Sara Smith, . Cristy. . Echaves. The black curve shows the northern hemisphere temperature in a climate model. . Climate and Human Evolution. Radiometeric. Frode Svartdal. . University. of . Tromsø. . Oct. 2013. Extinction: Basics. Extinction is defined in terms of a reinforcement process. Extinction contingencies. The . stimulus. (S. R. or US) is discontinued. Reconsolidation of . Amygdala. -Based Fear Memories: . A Newly Discovered Mechanism and its Implications for Exposure. Stefan G. Hofmann, Ph.D.. Michael W. Otto, Ph.D.. Elizabeth A. Phelps, Ph.D.. Bradford C. Richards, Ph.D.. ASTR 1420. Lecture . 9. Sections : 4.6, 6.4, 11.3. Mass Extinctions in the Earth History. Mass extinction . (a.k.a. extinction event) : is a sharp decrease in the number of species in a relatively short period of time.. Remember. Operant conditioning extinction differs from classical conditioning extinction. During extinction, responding decreases to baseline levels for both classical and operant conditioning. BUT: Operantly conditioned behavior shows:. n. Locally and Globally. E. NVR Senior Seminars. Fall 2013. The ENVR Senior Seminar. Defining Species Extinction. Species do not die, only individuals do. With the extinction of a species, no further individuals of that particular living kind will be born. . By: Alex Bauman. Do you think that humans are the sole reason for the extinctions?. Scientists Continue to Disagree. Changes in habitat. Hunting by humans. Combination of both reasons. Woolly Mammoths. By: Alex Bauman. Do you think that humans are the sole reason for the extinctions?. Scientists Continue to Disagree. Changes in habitat. Hunting by humans. Combination of both reasons. Woolly Mammoths. Essential Questions. What is extinction?. Which species have become extinct in modern times? . What are the characteristics of past mass extinctions? . How do modern extinction rates compare with natural (background) rates?. Megafaunal. Extinction. Kelsey T. . Stilson. Cultural and Climate Revolution. Migrations change both humans and the ecosystem.. Novel System. Stepped Global Extinction Events. Barnosky. , AD; Koch, PL; . Behavior. Effects of Extinction Procedures. Response Recovery after Extinction. Enhancing Extinction Performance. “Paradoxical” Reward Effects in Extinction. Extinction Procedures. Classical Conditioning: . Where did all these species come from?. Can new species form?. How do humans effect biodiversity?. How do we prevent extinction?. Why is it important to have so many different species? (in other words, what roles do they play in an ecosystem?.