Biology Essay Examples

  • Bioethics

    2110 words - 9 pages

    Bioethics, which is the study of value judgments pertaining to human conduct in the area of biology and includes those related to the practice of medicine, has been an important aspect of all areas in the scientific field (Bernstein, Maurice, M.D.). It is one of the factors that says whether or not certain scientific research can go on, and if it can, under which rules and regulations it must abide by. One of the most recent and controversial issues facing our society today is the idea of cloning. On February 23, 1997, Ian Wilmut, a Scottish scienti

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    Charles Darwin And Imperialism

    579 words - 3 pages

    England went through dramatic changes in the 19th century. English culture, socio-economic structure and politics where largely influenced by the principles of science. Many social expressions occurred due to these changes. Transformations which categorized this time period could be observed in social institutions; for instance: the switch from popular Evangelicalism to atheism, emergence of feminism and the creation of new political ideologies (Liberalism, Conservatism and Radicalism). These are just a few of the changes th

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    970 words - 4 pages

    For some time she had watched his movements, appearing coyly in his haunts. And now, had it paid off? Doubtless, he was in love. His muscles were taut; he swooped through the air more like an eagle than a Greylag gander. The only problem was, it was not for her that he then landed in a flurry of quacks and wingbeats, or for her that he dashed off surprise attacks on his fellows. It was, rather, for another - for her preening rival across the Bavarian lake. Poor goose. Will she mate with the gander of her dreams? Or will she trail him for years, laying infertile egg clutc

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    The Bengal Tiger

    1020 words - 5 pages

    The Bengal tiger is a carnivorous, mammal primarily from India. It lives in habitats such as the coniferous Himalayan Forest, the mangroves of the Sunderbans, the hills of the Indian Peninsula, or the forests of Rajasthan and Northern India. At one time Bengal tigers were scattered throughout Asia. Now they are generally found in India and some regions of Bangledesh, Bhutan, Nepal, and Myanmar. There is approximately 4,000 alive in the wild now, and about 300 are in captivity in zoos around the

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    Tropical Rainforests Of The World

    6450 words - 26 pages

    In this term paper, I will explain the great importance of the tropical Rainforests around the world and discuss the effects of the tragedy of rainforest destruction and the effect that it is having on the earth. I will talk about the efforts being made to help curb the rate of rainforest destruction and the peoples of the rainforest, and I will explore a new topic in the fight to save the rainforest, habitat fragmentation. Another topic being discussed is the many different types of rainforest species and their uniqueness from the res

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    Rhetorical Anyalisa Of The Effects Of Active Living Space On Captured Pandas

    1065 words - 5 pages

    Chris Perrin Dana Hyans Eng101 25 September 2007 Rhetorical Analysis The Influence of Activity Space on the Behavior of Giant Pandas in Captivity is a research report describing the details of an experiment involving space and the breading activities of Giant Pandas. The strait forward nature of this title shows it is used to inform readers, not attract attention. The informative style is the basic outline for many scientific papers and parallels Kirsht and Schlenz’s approach to a scientific article. This research is an effort to increase the dangerously low population of Giant Pandas

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    Cell Theory

    1097 words - 5 pages

    The development of cell theory The cell theory is the basic understanding of cells. The cell theory demonstrates that “all organisms are composed of similar units of organization, called cells” (Schwann 1839). This concept of the cell theory has been derived from two scientists Matthias Schleiden and Theodor Schwann, in 1839. Since that time the concept of the cell theory had been the primary foundation of biology, to this day. From the basic ideas of Schwann and Schleiden, other scientist have done further research and analyzed more to come up with more theory’s and explanations. Th

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    Rain Forest

    654 words - 3 pages

    The world we live on is a beautiful place. Sparkling oceans give way to shimmering, rolling deserts, while lush forests change to enormous mountain ranges. Due to our choices as the human race, this beauty is rapidly diminishing. Deforestation, habitat destruction, poaching and general disrespect towards our environment threaten this wondrous place we call Earth. The Earth is in Trouble, with a capital T. In direct correlation of poor human decisions, precious species are rapidly diminishing across the globe. Because of habitat destruction around the globe, more and more plants, animals, and

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    630 words - 3 pages

    Also called the Human Genome Initiative, the Human Genome Project is a international effort launched in 1988 by the National Institutes of Health and the Department of Energy to sequence and then decode all the genes on the 46 chromosomes of humans. The HGP was The project was being completed in the United States the whole time but conducted by The United States, Canada, Japan, Germany, Great Britain, France, and Italy and completed on June 26, 2001. The results of the project showed that there are only about 30,000 to 40,000 human genomes in the human body. By April 2003, the researchers had

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    Cloning And Mind Zombies

    1870 words - 8 pages

    Cloning and Mind Zombies Cloning, is it the thing of the future? Or is it a start of a new generation? To some, cloning could give back a life. A life of fun, happiness, and freedom. For others it could mean destruction, evil, or power. Throughout this paper, you the reader, should get a better concept of cloning, it's ethics, the pro's and con's, and the concerns it has brought up. You will hear the good of what cloning can do and the bad that comes with the good. Most of the information you will read about in this paper is what might become of the future. Even tho

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    The Merits And Problems With Enrst Mayrs Species Definition

    672 words - 3 pages

    Ernst Mayr is one of the most prominent minds in evolutionary science. Born in Kempten, Germany his interests in the study of natural history led him to attend the University of Greifswald, he then completed his doctoral program the University of Berlin. Mayr’s work as a naturalist began in 1923 when has was 19 years old, and he would eventually go on to become a renowned professor, associated with the biology department of Harvard University until his death, at one hundred years of age, on Feb 3, 2004(2). The bulk of his research was inspired by the questions, how do species originate, and ho

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    Responsibility To Save Endangered Species

    707 words - 3 pages

    The speaker contends that society should not make too many efforts to save endangered species, since the extinction of them are caused by natural forces. While I concede that the extinction of many species is a result of natural process, human beings also play a more and more important role in accelerating and exacerbating this process. And we should make moderate efforts to save the endangered species. Admittedly, in the geological past many species have become extinct naturally. The changes of environment due to natural reasons may destroy the homelands of many species, thus leading to t

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    Wolf Encounter

    1048 words - 5 pages

    Wolf Encounter It was a bitter gloomy morning and my body had started throbbing. The crows were over the tree tops, signaling that the morning had come. The bucket I was sitting on was damp from the rain storm the night before. I saw the world around me in a new way. I sat and started to watch over all the creatures below me. The tree across my stand was mature and withering away. It had been beaten over and over by all the creatures that passed by. Listening to the creatures of the forest was such an astonishing experience. I could hear deer walking, leaves rustling, and the cold breeze

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    Snakeheads The Frankenfish Facts

    597 words - 3 pages

    "Frankenfish:" The Facts · All 28 species of snakehead can tolerate low oxygen conditions in water because they are air breathers from an early age. When prevented from surface access, adult snakeheads will die due to lack of oxygen. · Snakeheads usually breed in the summer, but some species are known to breed throughout the year. · The female northern snakehead is capable of spawning five times a year. Northern snakeheads can live under the ice of northern climates. Northern snakeheads are the most available species of live snakeheads in the fish markets of New York and Boston. · When

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    669 words - 3 pages

    Extinction 1. Cretaceous-Tertiary extinction  Time – About 65 million years ago.  Extinction Rate – 16% of marine families, 47% of marine genera, and 18% of land vertebrate families, including the dinosaurs.  Possible Causes – Probably caused by an asteroid that created the Chicxulub crater. Other theories involve gradual climate change or flood like volcanic eruptions of basalt lava from the Decan Traps. 2. End Triassic extinction  Time – Roughly 199 million to 214 million years ago.  Extinction Rate – 22% of marine families, 52% of marine gene

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    Human Cloning

    587 words - 3 pages

    People made many inventions which made our life different and easier, those are inventions like airplane, penicillin and microscope. There is also huge improvement in building industry and building techniques. For many years scientist want to clone human and make our life easier and more comfortable. Cloning has its bad and god sides, which only depend on your side of view. Someone say that cloning is good and someone says that cloning should be forbidden all over the world. In my opinion we should obey rules of nature and stop playing god because people can’t make exactly same copy of human

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    Mmm Sushi

    2082 words - 9 pages

    Mmm…Sushi The bluefin tuna is one of the most magnificent creatures in the sea. It is one of the largest bony fishes, with the largest weighing nearly 1500 pounds. The bluefin tuna can reach over 12 feet in length, can swim over 60 mph, and can live up 30 years. Only 1 in 40 million ever make it to adulthood, which is 4-5 years old. Unfortunately for the bluefin tuna, it is also the most valuable fish in the sea. One specimen was sold at Tokyo’s Tsukiji fish market for around $400 per pound (Meet Amazing). The value of this fish is so high because the bluefin tuna is the best tasting fi

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    Human Vs Nature

    600 words - 3 pages

    Human v.s. Nature - To Build a Fire It is our very own human activities that have a profound effect on other organisms and their ecosystems. Although there are many contributing factors to this worldwide dilemma of human arrogance to nature. One's opinions and views will be expanded on the following major conflicts such as: human awareness, decreasing biodiversity, human population, and our human developement. The rates of extinct species are increasing dramatically as the human population grows. This rate is soaring so much that it is predicted that one species will becom

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    734 words - 3 pages

    How will it all end? Some say we are likely to go with a bang, others predict a slow end, while some suggest we will overcome our difficulties by evolving into a different species. According to Sir Martin Rees humans only have a 50-50 chance of making it through the 21st century. There are probably a million different ways people see the human race ending. During this speech I will touch on just a few of these frightening yet very precise topics. Climate change is one way people see the human race ending. Nick Brooks states that "By the end of this century it is likely that greenhouse gas

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    Darwins Theory Of Natural Selection

    1144 words - 5 pages

    o List and describe the evidence for evolution, which was presented by Darwin “Natural Selection” States that favourable variations on species are selected and harmful ones are eliminated according to the ability to survive in the environment. The four main points outlining natural selection are o No species has identical members o In every generation there are offspring that do not reach maturity, and as a result, the characteristics of these members are not carried on as they do not reproduce o Favourable variations allow for the adaptation of the stronger organisms to occur (surviva

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    Arctic Ice

    1345 words - 6 pages

    Arctic Ice Currently, the Arctic ice-cap is being profoundly affected by the changing climate. Covering an average of 14 million km2 during the winter and half this size in the summer, the Arctic's sea ice plays an important part in global weather systems. The light coloured surface of the ice reflects much solar radiation away from the Earth and acts as an air-conditioner for our planet. The Arctic ice is also home to a large variety of wildlife, such as the polar bear and the walrus, both of which relies heavily on the ice for its survival. However, as the temperatures in the Arctic re

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    Bio Informatics

    677 words - 3 pages

    Bioinformatics is the combination of biology and information technology. It is the branch of science that deals with the computer-based analysis of large biological data’s.Bioinformatics deals with Creation of computer database on genomes and proteins sequences Analysis of genomic data and protein data in this database by using algorithm Assigning function to the genes and proteins in these databases for the purpose of accelerating biological research Catalogues the information and identifies matching pattern from different branches like structural genomics(mapping, sequencing, genefin

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    962 words - 4 pages

    DNA Polymerase- Any of various enzymes that function in the replication and repair of DNA by catalyzing the linking of dATP, dCTP, dGTP, and dTTP in a specific order, using single-stranded DNA as a template. Restriction enzymes- Chemicals used in the lab to cut up DNA at specific sites so that it may be sequenced. They function in nature as a form of bacterial self-protection that can cut up foreign DNA. The use of restriction enzymes is crucial in DNA fingerprinting. DNA fingerprinting- the use of a DNA probe for the identification of an individual, as for the matching of genes from a for

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    The Middle Passage

    1538 words - 7 pages

    I had heard rumors of white men taking my people captive, but I dismissed the rumors as simply that…rumors. Until I too became a captive. I am the son of the great chief, Abiade, which in the white man language means “born of royal parents”. My name is Nakisisa, which means “child of the shadows”, and I had seen seventeen seasons. I have a younger brother by one season, Siwatu (born during a time of conflict), to whom I am very close. I also have an older sister of eighteen seasons, Mukantagara (born in a time of war), and a younger sister, Amali (hope) who has not yet seen six seasons.

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    307 words - 2 pages

    Giant Panda Habitat and Physical description The lovable and charismatic panda is one of the most popular animals in the world. Unfortunately, it is also endangered. The giant panda lives in a few mountains in central China, Sichuan, Shaanxi, and Gansu provinces. “Their habitat is broadleaf forests with a dense understory of bamboo at elevations between 5,000 and 10,000 feet” (Giant Panda, ¶ 2). Pandas are also called a black-and-white bears. It ha s black fur on its ears, eye patches, muzzle, legs, and shoulders. The rest of the panda’s wooly coat is white, which keeps it warm i

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    B Io Lab

    352 words - 2 pages

    Chapter 1: Introduction: Themes in the Study of Life • Life is organized on many structural levels • Each level of organization has emergent properties • Properties of life • Cells are an organism's basic unit of structure and function • The continuity of life is based on heritable information in the form of DNA • Structure and function are correlated at all levels of biological organization • Organisms are open systems that interact continuously with their environment • Diveristy and unity are the dual faces of life on earth • E

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    Rainforest Destruction

    507 words - 3 pages

    Many people are arguing about rainforest destruction, should or shouldn’t it happen? Some people believe yes because we need more land, others no as they contain rare animals. Today I will talk about some of the reasons that people believe they should and shouldn’t be destroyed. Many rare animals live in rainforests, if we destroy rainforests, some of those animals will become extinct. Imagine living in a world without rare animals like the red tailed phascogale (found in Western Australia), Lumholtz’s tree kangaroo (found in Queensland and Papua New Guinea) and the White Tiger (found in S

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    334 words - 2 pages

    The Siberian tiger is one of the rarest species in the world and it holds many characteristics that makes it unique and presentable as the true beauty of nature. These animals are critically endangered, facing an extremely high risk of extinction in the wild. There are currently less than 600 tigers living in the wild, and they are ranked among the most valuable animals in the wild. These tigers are currently confined to the Eastern region of Asia and are also known as the Amur, Manchurian, Korean, Altaic, or North China tiger. Siberian tigers are the heaviest and largest among the tiger su

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    514 words - 3 pages

    COLLEGE! MAJORS! That is all you hear in high school. It is very hard to pick a major and college. I mean there are so much colleges and majors to pick from. There are so many possibilities to pick from. But I found my major and it’s BIOLOGY. The first career or major was to become a densit. I first chose my major when I was in 9th grade. Densits really made my life better. When I was younger my teeth were not in good shape. My front two teeth were pushed out so I could not close my mouth. My right front tooth was more pushed out then the left out. So when I was in the 7th grade I got brace

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    Evolution Vs Creationism The Final Frontier

    544 words - 3 pages

    Evolution vs. Creation. The final battle (consult your cable or satellite provider to order this pay-per view event.) Hello my name is Dylan wagensveld, I am a student in grade ten at central bow valley school in gleichen Alberta. I have recently become fascinated with the theory of evolution and how it works, even though it has holes in it. In this essay you will learn what I have learned from watching two evolution films. One by david Suzuki, and the other by many evolutionary biologists. In the two films that we watched in biology 20 class, we learned about what evolution is and how

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    Role Of Histone Modifications In Gene Expression

    1525 words - 7 pages

    DNA TECHNOLOGY SUBMITTED TO: DR. MARIA BLAIR SUBMITTED BY –CHAGANTI MAHESH PHARMACOLOGY AND BIOTECHNOLOGY STUDENT ID NO: 18034800 SHEFFIELD HALLAM UNIVERSITY “Cloning of PTEN gene in to pETBlue- Describe the strategy that was used in the experiment. What is directional cloning and what are its benefits? The cloning strategy used in this experiment was directional cloning. There are mainly three steps involved in this type of cloning.  They are amplification of DNA fragment containing gene of interest.  Insertion of gene of interest.  Transfer o

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    Cloning And Brave New World

    1301 words - 6 pages

    What most people do not understand before taking a political stand for or against the possibility of cloning is that there are several different types of cloning that scientists have dabbled in over the years. There is recombinant DNA cloning, reproductive cloning, and therapeutic cloning. Each of these different techniques has their own place in science, and will be further investigated later on. What is interesting to look into is which type of cloning is used in the popular science fiction book A Brave New World by Aldous Huxley. In this famous novel, it is clear that Huxley refers to the t

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    It Takes Patience

    302 words - 2 pages

    It Takes Patience Shrill screams and grunts of exertion interrupt the silent morning, and a young woman knells on the living room floor, struggling to get her one year old son ready for the day. Red faced and tear stained the toddler arches his back and kicks his feet, fighting his mother’s every attempt to place a diaper around his bare bottom. Finally, the last tab is placed in the appropriate area and he wriggles out of her grasp. “Jeremy John, you come here right this instant!” Mom calls to the little escapee. Snatching up the miniature red t-shirt, she dashes across the carpet. Stoppin

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    427 words - 2 pages

    You probably eat genetically modified (GM) foods at every meal without knowing it. Most Americans do. While the biotech industry claims that the FDA has thoroughly evaluated GM foods and found them safe, internal FDA documents made public from a lawsuit, reveal that agency scientists warned that GM foods might create toxins, allergies, nutritional problems, and new diseases that might be difficult to identify. Genetically modified foods are those which have foreign genes inserted into their DNA. While scientists originally assumed that the inserted genes would only add a particular desired

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    Mexican Wolf

    448 words - 2 pages

    In 1914 the United States Congress approved the funding to destroy wolves. Many of the Government bounty hunters decided to help farmers to protect there livestock from the destructive creatures, and ever since there has been a chain reaction in the environment from coyote populations increasing to specific types of vegetation on the edge of extinction . we should bring back the Mexican wolf for a few reasons. Like the affect of the absents of the Mexican wolf for over sixty years. The Mexican wolf has been missing from landscape for over sixty years. During the time period the populations

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    492 words - 2 pages

    Oceanography and/or Marine Scientists focus on the study of marine plants and animals. They could also go into learning about the temperature, density, waves, and currents, along with the relationship between the ocean and the atmosphere. The way that they do these studies is by using refined instruments and, sometimes, robotic devices. These devices are used to locate things on the seafloor such as underwater volcano’s or sunken ships. Marine Science also helps us learn about the damaging effects of pollution to the ocean. As researchers learn more about the global ocean and its interactions

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    317 words - 2 pages

    The branch of my career is Biology. Many Zookeepers go to college for 2 or 4 years. They often study biology, animal science, or some other science (e.g. chemistry). Zookeepers also need to understand math so that they can measure food properly. Zookeepers need good writing and speaking skills too, so that they can take notes and talk to the public. The basic educational requirement for an entry level Zookeeper position has been a high school diploma or GED. However, more and more Zoos are seeking individuals with Associate and Bachelor's degrees in Zoology, Biology, Animal Management and rel

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    Polar Bears

    388 words - 2 pages

    Problem: I feel it’s amazing for mammals to be able to live in below freezing temperatures. I chose it to learn how animals such as polar bears can survive such major conditions of the artic that humans can’t. I was curious because I’m really cold when its 60 degrees outside and there’s no way I could imagine being somewhere below 0 degrees. I really don’t know anything about them and I hope to learn a lot more but the end of my investigation. Question: How doe polar bears survive in the artic? Hypothesis: I believe I will learn how polar bears survive in the wild in such cold weather

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    Effect Of P H On Crayfish Growth Ecostudy

    2308 words - 10 pages

    Jack Xia 2nd period A day Apes Effect of pH on Crayfish Growth Ecostudy In this study, the effect of ph on crayfish growth will be investigated. This experiment will help scientists understand how different levels of PH can have a negative or positive effect on organisms, specifically crayfish. This study could ultimately help scientists further understand the importance of wetlands and how environmental changes in the wetlands can affect the organisms that live in it. The experiment itself will analyze the effects of PH’s on the growth of crayfish by conducting a careful, controlled experi

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    Endangered Species And Snow Leopard

    1640 words - 7 pages

    Endangered Species and Snow Leopard There are trillions of living beings, and millions of various sorts of animals as well as plants, which is in our earth. Every type is particular and exclusive. However, а numbers of species are in hazard of being endangered, just as the Snow Leopard. When the last associate of а species departs, that species is supposed to be died out. Never again will there be an additional living thing of that type on the earth. Earth was once crammed with wildlife and in the past, people hunted without worrying concerning the future. It seemed as though t

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    Elements Of Biology Ecosystems

    639 words - 3 pages

    Ecosystems are not only a part of life, but they are a way of interaction among all organisms. While ecosystems are predominately found within specific geographical areas of various sizes, the entire earth’s surface is a combination of interconnected ecosystems. Plants, animals, the landscape and the climate all interact together within these environments continuously. This includes all abiotic (non-living) and biotic (living) organisms and each organism affects one another in many ways. In every ecosystem interdependence exists and it is the structural support for building complex feeding

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    The Extinction Of The Polar Bear

    1217 words - 5 pages

    The Extinction of the Polar Bear What Greenhouse gases are, how they work, and why they are threatening the very existence of the polar bear. “If a warming world melts nearly all sea ice during summers, as computer models predict will happen by the end of the century, scientists warn that the polar bear is unlikely to survive as a species.” Jordan Sherry 05-30-06 The Problem Carbon dioxide is what’s know as a “greenhouse gas” meaning it is able to keep the Earth warm by trapping some of the heat it produces within the Earth’s atmosphere. But if too much of the gas is trapped i

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    Puppy Mills

    891 words - 4 pages

    Imagine being trapped in a small wire cage your entire life. You would never be let out; you would never be warm in the winter. Imagine eating scraps, or getting into fights where you can’t leave the few feet you’re in. What if you talked too much and someone beat you until you were quiet? What would you do if you were only used for one thing, then killed on the spot? Have you ever been forced to do something that you didn’t want to do? Or do you know someone who has an emotional or physical disability because of their previous treatment? Dogs have experienced all of these things, but they don

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    Soggy Thinking

    741 words - 3 pages

    Smelly swamps and snake infested bogs often set the scene for many scary movies where the slime hides both the crime and the criminal from the police. As a result of such ideas, most people think that these places are both gloomy and scary. In reality, these locations are perhaps the most important places on earth. “Called wetlands, these places are the home to over 10,000 species of animals and 25,000 different plants and trees, many of which cannot be found anywhere else” (Easterbrook 23). It is essential that we preserve American wetlands to improve the quality of life for our future ge

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    3014 words - 13 pages

    The signature Species of the Southern Hemisphere (Antarctica) - the mascot if you will - is the penguin. There are not one and no fewer than seventeen species of penguins. Penguins are flightless birds in which several factors are contributing to the reduction of the penguin population. These contributing factors are both man-made and naturally occurring. “The origin of the word “penguin” has been the subject of debate for a long period of time. Researchers and historians’ theories range from reference to the amount of fat (penguigo in Spanish and pinguis in Latin) penguins possess to the clai

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    WTO Ethics

    1777 words - 8 pages

    The World Trade Organization (WTO) is an international organization designed to supervise and liberalize international trade. The World Trade Organization deals with the rules of trade between nations at a near-global level; it is responsible for negotiating and implementing new trade agreements, and is in charge of policing member countries' adherence to all the WTO agreements, signed by the majority of the world's trading nations and ratified in their parliaments. The WTO has 153 members, which represents more than 95% of total world trade.( The WTO has faced many ethical issues. S

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    The Florida Panther

    809 words - 4 pages

    The Florida Panther A species becomes endangered when it is threatened with extinction. Since time began, numerous species have gone extinct from natural means. Today, we can no longer ascribe the increasing extinction rate of plants and animals to natural processes. Most species of plants and animals develop into extinction due to habitat destruction, introduction of foreign organisms, and nonstop carnage. Florida’s state animal, the Florida Panther, has been on the endangered species list since 1967 (Roth 2007). It is one of the most endangered mammals on earth. There are an estimate

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    White Lions

    644 words - 3 pages

    The first time I ever heard of a White Lion was from a story on Animal Planet. It is said that the White Lion is one of the many messengers from God. A long time ago, when God first put animals on the continent of Africa, all the animals fought over who was the most beautiful of them all. This made God angry because he thought them ungrateful, and so he decided to send the special Messengers. (Which in consisted of the White Lion, the White Alligator, and the White Baboon.) He put them on Earth to show and remind animals why they are the color they are born as, to survive. Which is true,

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    1285 words - 6 pages

    Driven by the need to amass knowledge, we find ourselves surging forward into the exploration of a story where the more we know, the less we can feature ourselves, thus causing conflict in some forms of philosophical thought. Evolution by natural selection undermines the idea that humans are the culmination and the ultimate beneficiaries of all nature. However, to say that anthropocentrism necessarily dissolves in the rising tide of evolutionary theory is to ignore the ways in which human centered humanness plays an intriguing role in evolution. In his article, “Anthropocentrism: A Mod

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    Endangered Species

    679 words - 3 pages

    ENDANGERED SPECIES Endangered species are living things whose population is so reduced that they are threatened with extinction. Thousands of species are included in this category. The International Union for the Conservation of nature and Natural Resources publishes a list of threatened mammals, birds, reptiles, amphibians, and (many people donÕt consider them) plants. CAUSES OF EXTINCTION Millions of years before humans, extinction of living things was linked to geological and climate, the effects of which were translated into major alternation of the environment. Environmental change is sti

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