Are polar bears facing extinction because of global warming? [pic] By: Aieron Levy Could global warming be killing polar bears? The weather temperature is rising because of global warming‚ this is due to changes in the entire Arctic eco system. Scientists suggest that warmer temperatures mean less lack of ice that polar bears depend on for hunting. As their normal habitat gets hotter it goes down in size‚ this consequence leads to fewer polar bears. For the polar bear‚ which
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In this essay I will be talking about The ‘Evolution of Polar Bears from Brown Bears‚ specifically skin and fur colour‚ skull and ear shape‚ and digestion of seal fat’ ill also talk about the two theorists Jean-Baptiste Lamark (1744-1829) and Charles Darwin (1809-1882). Charles Darwin’s theory states that the change in evolution is the variation in each generation and different individual surviving features with different combinations of the variable. The Individuals with characteristics that increase
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more about is the Ursus maritimus‚ commonly known in North America as a Polar Bear. Ursus maritimus is the Polar Bear’s scientific name which means sea bear; it received this name because it is heavily involved in the water and is the only bear considered to be a marine mammal. There is one documented Polar Bear that undertook a 426-mile swim that took nine days and did not rest on land; they are phenomenal swimmers. Polar Bears are found in the wild in the Circumpolar North‚ which consists of countries
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Global Warming is causing the decrease of polar bear populations due to the loss of habitat‚ scarcity of food‚ and higher mortality rates in pups. There are nineteen subpopulations of polar bears in the world. They are called "subpopulations" because they are not genetically distinct to one area but generally inhabit nineteen different areas across the circumpolar arctic. A study showed that between 2001 and 2010 there was a 40% population decrease of these bears and according to a U.S Geological Survey
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adaptations for living and surviving in their environment. The polar bear is a great example of adaptation. This bear is very different from its cousins to the
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Can you imagine being a polar bear stuck in the middle of the ocean on a piece of ice‚ having nowhere to go and knowing that you have no way out? Luckily‚ there is hope for these polar bears and many more species all over the world that can prevent this situation from even occurring. That is the World Wildlife Fund. WWF helps all species of animals and their environments by putting up numerous safe havens that are controlled and supported with every dollar that is donated. All they need is a few
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How Camels and Polar Bears Adapt Camels First‚ camels can store up to 50 gallons of water in one of their stomachs‚ which allows them to last up to five days in the desert without drinking any water. Their two-toed feet are designed to spread their weight‚ so that they do not sink into the sand. Their nostrils are narrow slits‚ and they have long eyelashes‚ which keep the wind from blowing sand into their nose or eyes. They can also store fat in their hump‚ which gives them energy when food is
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The Polar Bear’s fur is extremely thick and it traps the heat so well‚ you can’t see one in inferred vision. This is good because the retention of heat keeps it permanently warm. It does not lose body heat as other animals and people do‚ and it would not be recognised by an inferred scanner‚ such as used when searching earthquakes and other devastated sites for survivors. The Polar bear would not be detected so this shows how well the bears fur keeps its body warm‚ especially in icy cold freezing
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Polar bears our looking for food but they can’t find it anymore. So they go into villages for more food which ends up having more bear attacks and deaths. 90% percent of the world’s food go to Alaska. The food source has always been fine for the polar bears. Arctic is getting warmer. The essay is mostly about Polar bears and why the polar bears are going into villages to get more food. There were always enough food for the polar bears but now bears are going into villages for more food because
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http://www.geol.umd.edu/~candela/pbevol.html http://www.studymode.com/essays/Evoloution-Of-Polar-Bears-Lamarck-Vs-1718444.html http://www.darwins-theory-of-evolution.com/ What is the evolution of a polar bear? Polar bears have lived in the arctic for many years. Their bodies have adapted and developed in order for their survival in the polar region. Polar bears are able to live in the deep freeze for many reasons. They have thick fur that keeps in their body heat. They have small ears
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