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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. .
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.
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.
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.
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
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.
No one knows for certain exactly why and how the dinosaurs became extinct. Probably the most popular theory right now is the Asteroid Theory. According to this theory a large asteroid or comet collided with Earth about 65 million years ago. Scientists think that such a large collision would throw so much dust into the air that sunlight would not be able to shine and plants and animals would die.
When I started this paper, I had many questions. I wanted to know what all the main theories of dinosaur extinction are and how many there are. I also wanted to know what factors in each theory would have killed these massive beasts. Other questions I had are: had dinosaurs been dying out before the event? Did any dinosaurs survive the Cretaceous/Tertiary (K/T) event? What religious beliefs contradict the dinosaurs’ very existence? The last question I wanted to address was whether or not an event such as this one could happen to us? After five papers and hours of research, some of the new questions I have are: what happened after the Cretaceous/Tertiary event? I would also now like to know if one of these theories could happen to us and how we would be able to handle it. I came up with these questions because I wanted to know we are living with this present danger. Whether a huge ice age could eradicate an entire population of humans is mind-boggling and would be extremely interesting to research. To come up with these new questions, I let my brain wander. I was joking a...
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.
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.
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...
Several mass extinctions have occurred during the Earth’s history. The Cretaceous – Tertiary Boundary (K-T) Extinction caused the loss of at least three-quarters of all species known at that time including the dinosaurs. The cause of this mass extinction is a controversial subject among scientists but the fossil evidence of it’s occurrence is abundant.
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
seems like it happened so sudden, as geologic time goes, that almost all the dinosaurs
The mass extinction of the dinosaurs is still a mystery today, but there are some theories today that suggest what happened. One of the more widely accepted theories is the asteroid theory. This theory suggests that an asteroid with an approximate diameter of 6-15 km, hit the earth with a force of five billion atomic bombs. Another theory that they believe could of happened is the volcano theory, that many volcanoes erupted and wiped the dinosaurs out.