Pachycephalosaurs they microscopically examined the bones looking for levels of bone maturity and metaplastic bone to discern the animals place in the growth series and develop their hypothesis for stages of growth for these dinosaurs.
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Dear Mr Clarkson‚ I have recently read your article ‘Stuff the Tiger – long live extinction’ and disagree strongly with the views you put forward. Your arguments are unjustified and the examples you use to demonstrate are faulty and contradicting to each other . In this article‚ you have mentioned how extinction doesn’t have any impact on mankind. Also‚ your opinions were based upon natural extinction and Darwin’s theory of the survival of the fittest instead of human intervention. I would like
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Question 1 How significant are mass extinctions to living organisms? Mass extinctions are very important events to the living organism. When mass extinction happens‚ it will create huge impact toward the world‚ negative or positive. For the conservation biologist‚ they usually think this is a great loss. On the other hand‚ from the evolutionary perspective‚ mass extinction could be something good and bad at the same time. Mass extinction would end a lineages and the unique genetic vitiation will
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Theories For The Extinction of Dinosaurs Theory Evidence They’d been around too long and just ran out of ways to evolve. The dinosaurs were a group of organisms that lasted around 180 million years‚ evidence suggests that these organisms ran out of ways to evolve and as a result could not cope with changing conditions. They were poisoned by the newly evolving plant life which produced chemicals to protect themselves from predation. This theory is plausible as it ties in with the first one‚ as the
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species. Examples of poaching include shooting animals out of season‚ catching more fish than allowed‚ and “spotlighting‚” which is when a hunter shines a powerful light into a deer’s eyes to incapacitate them. These are the types of poaching seen in America. Commonly poached animals in North America include white tail deer‚ Canadian geese‚ and numerous types of river fish. All of these are common animal. In other parts of the world‚ the poached animals are usually endangered. The black market has
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forms present during this period‚ the events surrounding the mass extinction that signified its end remains a mystery today. The end-Permian mass extinction is regarded as the largest mass extinction event in the earth’s history‚ with marine and terrestrial life declining by 95% and 75% respectively (Shen et al. 2014). While clear that life on earth was greatly affected‚ many scientists are conflicted on the cause/causes of the extinction event.
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Elizabeth Kolbert wrote The Sixth Extinction as an attempt to explain and give examples of what seems to be a 6th extinction event currently happening in the modern world. We have discussed and learned about five other extinction events throughout this semester‚ and Kolbert pushes this 6th extinction event as a new rapid extinction predominantly caused by humans. One of the underlying causes of this 6th extinction event discussed in the book is the mass killing of both animals and humans. Another underlying
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Mass Extinctions What is the biological significance of mass extinctions? PART A You are living in the 23rd century. All knowledge of scientific things have been hidden from the human race by evil dictators during the last 2 generations of humans. One brilliant scientist‚ Albert Einstein the 16th‚ has rebelled against the dictators. He has devised a time machine and is asking for volunteers to go back in time and bring back important scientific discoveries. Your assignment is to go back to
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The 6th Major Extinction An Extinction is when tens of thousands are in danger of dying out completely. A Mass Extinction is when multiple different kind of species die out completely. Human activities do the most damage to animal habitats. Human activities include Illegal hunting‚ pollution from factories‚ and moving in of an invasive species which could mess up the whole ecosystem. Another example of human activities was back in the early 1800s‚ there were about 2 billion Passenger Pigeons
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There have been many investigated causes for this‚ but the scientific community cannot decide on one for sure. This is due to lack of evidence for each theory. The most common current theories about the extinction are over hunting‚ climate change and disease. One of the possible causes of extinction of the megafauna is climate change. This is predicted as the megafauna all around the world became extinct close to the end of the last ice age and just and the climate was getting warmer (Florek‚ 2015)
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