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Dinosaurs extinction
Extinction of dinosaurs persuasive essay
Dinosaurs extinction theories
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There has been a debate about what happened to the dinosaurs since they were discovered. There are many thoughts of what happened to the dinosaurs, the two main theories behind the extinction are scientific and religious. Proof for both theories do exist and debates between scientists are still going on to which one really happened. It is a mystery as much for Evolutionists as it is for Creationists about the extinction of the dinosaurs. The fossil record of dinosaurs was poorly know for a long period of time. During this time period was when the dinosaurs were thought to have gone extinct. The scientific reason for their extinction was that there was a giant asteroid that caused chain reaction and wiped out the dinosaurs. Some scientists say the dinosaur’s extinction came quickly. Evolutionists say the dinosaurs went extinct 65 million years ago. Creationists say that the dinosaurs weren’t able to survive the Earth after the flood. Both of the theories have supporting evidence and that is why there is an ongoing debate over what really happened to the dinosaurs. (WGBH Educational Foundation and Clear Blue Sky Productions, Inc. et al., 2001)
The extraterrestrial impact theory is that scientists have found logical evidence for if there was a large asteroid. The biggest point of evidence for it being an asteroid was that there was a 150 kilometer wide crater that was found off the coast of the Yucatan peninsula. Scientists calculated that the asteroid or comet was traveling at 30 kilometers per second. For months, scientists concluded that after the impact, clouds of dust blocked the sun and cooled the Earth to a deadly level for plants, and inturn many animals. After the dust settled, greenhouse gasses created a smolder...
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...and not having enough food. Carvings and drawings have been found that support the idea of humans and dinosaurs living at the same time. The idea of dinosaur extinction is always up for debate. There is good evidence for both theories but they are still unclear as to what really happened to the dinosaurs. (Ron Hutchinson et al., August 20, 2013)
References
"What Killed the Dinosaurs?." PBS. PBS, n.d. Web. 15 Nov. 2013. .
"31 Dinosaurs | Bible.org." Bible.org. N.p., n.d. Web. 19 Nov. 2013. .
"WHAT ABOUT DINOSAURS?." WHAT ABOUT DINOSAURS?. N.p., n.d. Web. 19 Nov. 2013. .
"Dinosaurs and the Bible." Christian Courier. N.p., n.d. Web. 21 Nov. 2013. .
Sex, drugs, and disasters are both popular topics that grab public attention and scientific theories of the extinction of dinosaurs. While sex and drug hypotheses represent silly speculations, the disaster claim is good science: it provides testable evidence, has an impact on other scientific fields, and generates continuous research.
Fossil records from 12,000 years ago show the appearance of the Large Mammals followed by Paleoindian in Eastern North America. Another piece of the fossil record shows that the appearance of Paleoindian brought about the disappearance of the large mammals. Some people feel that, "there is evidence to suggest that rapacious hunting practice of the paleohunters in North and South America 12,000 years ago may have caused…The demise of the very animals they hunted" (Powell 1987). The evidence Powell suggests is that the extinction of a large mammal is usually followed by the appearance of humans in the fossil record. This coincidence is not only seen in the fossil records of North and South America but Europe and Asia as well. Powell shows that as human populations increased local extinctions of large mammals occurred. This was probably due to the fact that there were not many predators that could hunt the large mammals except man. For this reason it is also highly like likely that man and large mammals did not co-evolve which ultimately resulted in the extinction of large mammals.
The question of what caused the extinction of megafauna during the Late Pleistocene period is one that archaeologists have struggled to answer for decades, but why should it matter? Discovering with certainty the cause of megafaunal extinction would simultaneously prove or disprove any of the proposed implications of each existing theory regarding this massive extinction.
The Permian-Triassic Extinction is a mass extinction that occurred between the Permian and Triassic geologic time periods approximately 250 million years ago; it is the deadliest of all extinctions that have occurred on Earth. In addition, during the Permian-Triassic extinction the continents of today existed as one supercontinent known as Pangaea. This was the first time in history where continental or land mass exceeded that of the ocean. This was also before dinosaurs of the Triassic period roamed Earth, during this time animals such as the therapsids, and Synapsids such as the Pelycosaurs, insects and amphibians also occupied Earth. Fauna that existed during the Permian period includes Gymnosperms, or seed producing plants such as the Conifers. Other animals that existed during this time include marine life such as brachiopods (clams), bryozoans (coral-like skeletons), bony fish and sharks, as well as crinoids (sea urchin like creatures). According to National Geographic, about 90 percent of all the animals and fauna of this period perished, the marine life was hit the hardest wi...
Not long ago on the 15th of February 2013 an asteroid named 2012 DA14 merely scrapped the earth’s surface by a tiny margin, even closer than some satellites. According to the NASA (National Aeronautics and Space Administration) the asteroid was 17,200 miles above our planet's surface, which may seem a long way from earth. However, in terms how big the earth is compared to the 17,200 miles, we can acknowledge that many people were saved from death.
One prominent flub that is witnessed throughout the duration of the film, besides the fact that most of the dinosaurs are from the cretaceous period, is the fact that it remains impossible to bring dinosaurs back to life. Dinosaurs are extinct! They have been extinct for 65 million years. True, one would need dinosaur DNA to recreate dinosaurs, and it is indeed possible for mosquitoes with the DNA of dinosaurs to have been trapped in hardening amber, as seen in the film. However, it is impossible for scientists today to find hardened amber with dinosaur DNA in it, simply because DNA does not last; it degrades over time (even in preserved amber). Just the tiniest bit of degradation would ruin its value (UCMP 1995). Therefore, you would not have the starting point for proceeding with such an endeavor as the scientists inaccurately accomplish in Spielberg's film: the breeding of dinosaurs.
ix[9] Highfield, Roger. Dinosaur Extinction Theory ‘A Myth.’ The Telegraph – UK. March 1, 2004. Internet: http://www.rense.com/general49/tho.htm
We use dinosaurs to represent the changes in nature that have occurred throughout time. Studies found that although the “oldest rock did not show evidence of life, the progression of plant and animal life that changed in recognizable intervals, from ancient life, age of reptiles to the age of mammals” (Dino Nature Metaphor, slide 6), measured the age of the earth. When we think of dinosaurs in relation to nature, we think of that very powerful force that controls the cycle of life. Nature was able to yield such magnificent ferocious creatures that walked the earth and then take them back when they served nature’s purpose. Dinosaurs fit perfectly in nature’s constant
On June 30th, 1908, another of these universal mysteries (although one that can be considered philosophically smaller) released 10-15 megatons of energy in a blast that devastated large swathes of the Tunguska forest region in Russia. Many theories exist regarding the cause of this impact, known as the Tunguska Event, ranging from notions as grounded as volcanic gas vent explosions to ideas as enticingly fanciful as a UFO crash, government bomb testing, or even secret experiments conducted by Nikola Tesla. Most scientists have settled on the idea that the event was the result of a celestial body breaking through earths upper atmosphere and exploding before impact with the surface. The idea that asteroids, comets or other space debris could have brought elements necessary for life to our planet is not a new one, and whilst most research on Tunguska focuses on what exactly the celestial body was, the same research informs us whether a 'life by impact', or pseudo-panspermia, hypothesis could be somewhat veridical.
In the essay “Sex, Drugs, Disasters, and the Extinction of Dinosaurs” scientists come up with several theories of how the dinosaurs could have possibly become extinct. They tell three of the leading theories as to how they think the dinosaur era extinction happens. The whole thing is a big conspiracy. These theories are government cover-ups to keep us from knowing things. The government knows things that they don’t want us to know, but I already know what happened. The extinction of the dinosaurs are the effect of alien activity on and around Earth.
The most significant event of the Cretaceous era came at its end. Nearly 65 million years ago, the second most severe mass extinction in earth’s history occurred. This resulted in the loss of around 80% of species living at the time. Though nowhere near as severe as the end-Permian mass extinction, the end-Cretaceous extinction is the most well known mass extinction event. This is due to the violent event that caused it the extinction, as well as the chapter of earth’s history that it closed: the Dinosaurs. The Cretaceous Event ( often shortened to K-T event) Of the animals that were killed off were the flying reptiles (pterosaurs) and the last few mosasaurs and plesiosaurs, both early marine reptiles. Many mollusks and species of microscopic plankton were killed. Terrestrial plants suffered mass extinction as well. Almost 60% of terrestrial plants were lost. This led to high extinction rates among insect populations, especially insects that were highly specialized to feed on just a few types of plants had it the worst. It took approximately 9 million years for the global insect populations to recover from the Cretaceous extinction. Immediately after the extinction, the earth saw an explosion of short term species who respond well to fire, or other external disturbance. Evidence of the catastrophe comes from a thin rock layer deposited worldwide just after the impact. It is dominated by fossil plants whose descendants recover quickly after fires of other disturbances, such as Fire Weed in Alaska. The causes of the Cretaceous extinction are still being debated by paleontologists. Scientists agree that the main cause of the extinction was a...
The dinosaur could not have lived for ever. No creatures, no plants, no tiny bacteria are
Asteroids rarely ever hit, but one strike can obliterate the entire human race. A surplus in geological support points to the fact that a very large asteroid hit the Earth a long time ago. The effect created a massive explosion, as well as a crater about 110 miles wide.
The asteroid may contain popular ores like iron or coal. In the article ¨Tunguska Meteor Impact¨ it said that 220 million pounds of space rock heated the air which made the trees and vegetation burn away. If somehow the minerals survive the heat and the burning that comes when it enters the atmosphere, then maybe scientists can mine it and can obtain a new strong mineral. Scientists can now discover a new way to protect humans and other
Even though we don't know what happened for sure to the dinosaurs and how they were extinct, there is evidence that suggest how they were extinct. A massive crater with more than 180km in diameter was found buried at Chicxulub in Mexico in 1990. This finding helps support the asteroid theory. They say that the impact of the asteroid would have incinerated all plants and animals in its path, caused fires, generated earthquakes and tsunamis and scattered debris, dust and sulphuric acid into the atmosphere. When all the plants die all of the herbivore dinosaurs will die. When all the herbivores die the carnivores will follow as they feed