PART 1: Question 1 Describe the differences between divergent evolution‚ convergent evolution and parallel evolution and provide an example for each type of evolution. Divergent evolution occurs when change from a common ancestral species increases as time passes‚ leading to a speciation event; that is‚ the evolution of two new species. Convergent evolution on the other hand differs from divergent evolution because it is the development of similar features separately in unrelated groups of organisms
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Evolution of Polar Bears The observed fossil transitions that inform our knowledge of Polar Bear speciation are very well documented. Bear fossils change through time: generally‚ when examining the fossil record‚ successively deeper levels of sediments or sedimentary rocks yield successively older fossils. For some transitions from one species to another‚ one can find a well-characterized series of transitional specimens leading the observer across the species "boundaries" (Kurten‚ 1976). Sometime
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approached by anyone but if you needed help with finding something or you had a question about a product‚ there was staff available to assist. There were signs on the top of each isle which gives you an idea of the kind of things you can find in that particular isle. The store decor is not particularly pleasing to the eye but bearable none the less. You can pretty much find everything you need in your daily life and more at this store. Quality of products is below average and prices reflect the same. You
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Daniel Pathammavong Fundamentals of Public Speaking Outside Speaker 12/14/14 This Saturday on the 13th I went to see a speaker talk in Minneapolis on Nicollet Ave. I had found out about the event from a website called Meetup.com. There was a travel author planning to speak at a meeting room in a coffee shop about how living internationally can change your perspective. I thought that was intriguing so I went! It was at 2p.m that Saturday and there wasn’t a time scheduled for it to end. When I
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The invasive species are harmful for native systems and time and money should be invested to prevent these species from spreading and damaging systems that they are not native to. Strict rules for environmental obedience are necessary and good. Much more needs to be done to protect our planets and its biodiversity from the invasion of alien species. When non-native species from other ecosystems are introduced‚ they can upset that balance and bring harm to the established plants and animals‚ and
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Invasive Species Benefits For centuries‚ invasive species have been recognized as a threat‚ torment‚ and even a nuisance to society. Invasive species are any species that is not native to a specific ecosystem (7). The majority of people believe that invasive species are harmful; causing economic damage‚ disrupting ecological food webs‚ and out competing native species for food and land. The benefits of invasive species are overlooked and tossed aside by many people. Invasive species have the ability
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How has photography influenced your life? Photography has influenced my life in ways that are hard to explain. From the time I was born‚ photographs have surrounded me everywhere I look. With that being said‚ its hard to imagine life without to photographs; therefore I can eaily say that photography has influenced me. The tricky part of the question is answering in which ways has photography influenced my life. I would have to say that by being able to look at photographs everyday‚ I’m able to
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Biodiversity has been on the decline over the past century and the background rate has been mostly accelerated by the humans. Considerable damage has already been done. Possible solutions have been discussed and categorising species according to how in danger they are is one of those solutions. Below are some of the threatened organisms in different continents around the world. TABLE OF CONTENTS Africa Mammals Birds Reptiles Amphibians Fishes Asia Mammals Birds Reptiles
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Introduction To Evolution What is Evolution? Evolution is the process by which all living things have developed from primitive organisms through changes occurring over billions of years‚ a process that includes all animals and plants. Exactly how evolution occurs is still a matter of debate‚ but there are many different theories and that it occurs is a scientific fact. Biologists agree that all living things come through a long history of changes shaped by physical and chemical processes that
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Climate Effects on Human Evolution This article explores the hypothesis that key human adaptations evolved in response to environmental instability. This idea was developed during research conducted by the Smithsonian’s Human Origins Program. Natural selection was not always a matter of ‘survival of the fittest’ but also survival of those most adaptable to changing surroundings. (Illustrations for this article coming soon.) Background Paleoanthropologists – scientists who
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