"Polar bear extinction" Essays and Research Papers

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    Extinction of Dinosaurs

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    Extinction of Dinosaurs Ryan Humphries Biology 6th Period Two-hundred and thirty million years ago the first dinosaur-like creature roamed the earth. Within five million years it could be considered a dinosaur. They were soon at the top of the food chain. They populated every continent. Then 65 million years ago they vanished. The most powerful creatures ever to live on earth had become extinct. Dinosaurs were not the only victims of this "mass extinction." There were many other species

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    Brink of Extinction

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    Brink of Extinction In Malaysia today the survival of wildlife have taken second place to human activity. All major wildlife species are now threatened with extinction. Does saving these endangered species and taking necessary actions for those who are on the brink of extinction means anything to you? Most of us are not aware that our Malayan Tiger‚ Clouded Leopard (Roy Goh 2011)‚ Pygmy Elephant‚ Sumatran Rhino‚ Orang-Utan and Turtles are in the under-extinction animals category

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    BIODIVERSITY AND EXTINCTION Biodiversity is determined by the variety of species extant in a specific ecosystem; this includes both animals and plants. Biodiversity is what gives an ecosystem a continuing and symbiotic relationship between all the organic and inorganic elements; maintaining the proper balance of different gases such as nitrogen‚ oxygen‚ hydrogen‚ carbon dioxide and many other elements‚ which differ in composition depending on the type of environment (such as subterranean‚ aquatic

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    Mass Extinction

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    Extinction and Evolution Ecology helps us understand the importance of mass extinction in evolution‚ and it also helps us understand some of the causes of extinction. Ecological niche is one of the most important concepts to understand. An animal or plant lives in a certain place is active at a particular times‚ and eats certain things; all these factors describe its ecological niche. Our environment is parted into millions of ecological niches‚ each that represents a probable home for life

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    Polar Opposites

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    English 101 March 01‚ 2013 Polar Opposites When my twins were infants it was much easier for everyone to acknowledge them as twins. A big clue was the double stroller. There was never a question if they were twins as long as I had that linking stroller nearby. But as they grew out of the strollers they grew into themselves. Now that they are six years old nobody would suspect them of being twins. They are complete opposites. I often joke to others that if I sent someone into a room

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    Dinosaur Extinction

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    pterosaurs‚ ammonites‚ and many families of brachiopods and sea sponges. Also‚ many shark species as well as most vegetation did not survive(“Dinosaur Extinction”). What could have possibly killed off the dominant animal group of the time? The answer to this question is still unclear but there are many hypotheses that attempt to explain this extinction event. To find out exactly how this happened‚ evidence must be gathered not only from fossils

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    The Sixth Mass Extinction

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    The Sixth Mass Extinction The mass extinction of certain animal species and plants that is facing the Earth today has been compared to‚ although some scientists suspect worse than‚ the extinction of the dinosaurs. The annihilation of the dinosaurs was caused by the collision of a  large asteroid with the Earth. This current mass extinction‚ however‚ is different than any of the five mass extinctions that have been seen by the earth because this extinction is manmade‚ not natural. With the search

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    Extinction of Baiji

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    The Extinction of Baiji The Baiji‚ also known as the Chinese River Dolphin‚ are part of the family Plantanistiade‚ the river dolphin family. They had exsited in the Yangtze River in China for thousand of years. Nevertheless‚ the Baiji was recently declared extinct. The baiji’s demise can be attributed to over fishing‚ its lethal environment and the Great Leap Forward in China. Excessive and illegal fishing was a great threat to the baiji’s way of life. Electric fishing and the fishing method

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    Extinction of Animal

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    reasons as well as argument for necessity of conducting such campaign. First of all‚ the environmental degradation is widely recognized as a primary reason. In fact‚ the deforestation and environment pollution have put creatures on the verge of extinction. Domestic apes in Vietnam‚ which have die out due to shrinking of tropical trees‚ could be taken as a particularly salient example of this. Ignoring the impact of human on minimizing the habitat of animals is thereby a grave mistake. Additionally

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    GMO's and Extinction

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    GMO’s inside a lab and work to expel the uncontrolled production of GMOs‚ because of the fact that the genetically modified organisms can interact with the environment and cause the transfer of harmful genes which can lead to the elimination and extinction of all natural organisms. It may not be a well known fact but GMOs have greatly increased our quality of life. GMOs have mainly helped our agricultural industries by increasing the size and the quality

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