Summaries Synchrony and Casual Relations Between Permian-Triassic Boundary Crises and Siberian Flood Volcanism" by Paul R. Renne‚ Zhang Zichao‚ Mark A. Richards‚ Michael T. Black‚ Ashish R. Basu The paper focuses on the mass extinction that took place at the Permian-Triassic (P-T) boundary‚ as the greatest bio-crisis on Earth‚ whereby almost 90% of the marine species and 70% of terrestrial species were eliminated. This paper regards the Siberian traps‚ the most significant "continental flood volcanism
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Unit 18 managing a business event Understanding the role and skills of event organiser P2 Event organisers are in charge of all parts of an event. They co-ordinate all aspects‚ from the beginning right through to the end‚ overseeing all the details and ensuring everything gets completed on time and on budget. While there is a great variety between the different types of events and the different tasks an event organiser will need to do‚ there are some parts which are almost always the same. Venue/Location
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living on earth for only around 200‚000 years but technically it has taken 13.7 billion years of the perfect events occurring for me to be here typing this today and for you to be reading it. The knowledge our species has learned in these 200‚000 years of existence and the 13.7 billion years to be here today should not be taken for granted. We must take precautions to prevent the extinction of our species and whatever else we can save because it is possible we are the only planet that has the hope
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climate. In terrestrial habitats‚ tropical regions are typically rich whereas polar regions support fewer species. Rapid environmental changes typically cause extinctions. One estimate is that less than 1% of the species that have existed on Earth are extant. Since life began on Earth‚ five major mass extinctions and several minor events have led to large and sudden drops in biodiversity. The Phanerozoic eon (the last 540 million years) marked a rapid growth in biodiversity via the Cambrian explosion—a
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TECHNICAL NOTES A Literature Review of Emergency and Non-Emergency Events Minkyu Lee Fire Protection Research Foundation © August 2012 The Fire Protection Research Foundation One Batterymarch Park Quincy‚ Massachusetts‚ U.S.A. 02169-7471 E-Mail: foundation@nfpa.org Web: www.nfpa.org/foundation Page 1 of 45 (This page left intentionally blank) Page 2 of 45 Executive Summary NFPA 101‚ Life Safety Code® ‚ contains information that is useful not only in fire related emergencies
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Mass extinction; This is a term that most don’t fully appreciate the severity of. Like many aspects in the time scale of our earth and solar system‚ it is difficult to comprehend its scale at the surface. A mass extinction is classified as a massive dying of animal species in a short geologic window. In the above analogy that would mean having anywhere from 70% to 90% of creature species die in a fraction of a second. Mass extinctions are driven by a compounding of events. For example‚ the extinction
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The Dinosaur’s Demise About 65 million years ago‚ a huge asteroid about 10 kilometers (6 miles) in diameter supposedly struck the Earth and caused the extinction of dinosaurs (Than). But is it really possible that one meteor could kill over 700 different species of dinosaurs? Could the asteroid really have been so big that it devastated the entire world? Is there any explanation to why the asteroid hit in the first place? There is no way that scientists could truly find the answer to any of these
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Throughout time‚ there have been many mass extinctions that impacted the planet earth. Today‚ scientist believe that a next mass extinction is coming soon. An author by the name of‚ Elizabeth Kolbert‚ wrote a story about Karen lips‚ who had the impression that something weird was going on in the small town of El Valle‚ when she went to the main street there were golden frogs that basically represented their local street‚ and people even made souvenirs of them‚ but then she noticed that the population
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The abrupt extinction of the megafauna during the Pleistocene in North America dwindled the large animal population to about 70 percent (Martin). The cause of this massive extinction is unclear due to lack of evidence during this time‚ but there are many subjective beliefs that involve both ecological and environmental forces. An ecological force such as human hunters are one hypothesis that is believed to have caused the extinction of the megafauna. This hypothesis is known as the “overkill hypothesis
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1.) Were the North American megafauna wiped out by early human colonizers? The Overkill hypothesis is of the Clovis crossing into a “virgin continent” (The America’s) and wiped out the megafauna due to overhunting. First developed by Paul Martin in the 1960’s‚ Clovis started to occupy North and South America 13‚500-12‚500 years ago; soon after early sites were established 17 genera of North and South American megafauna went extinct between 13‚250-12‚900 (other species such as ground sloths become
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