While it once might have seemed impossible that the sea ice in the Arctic would ever cease to exist‚ today the trends in melting sea ice are conclusive‚ and the leading cause of polar bears being at risk. In the past thirty years‚ mean world surface temperatures have increased 0.2°C per decade. However‚ in some parts of the Arctic‚ temperatures have increased ten times the rate (Hansen et al‚ 2006). Since the late 1970s there have been major reductions in summer sea ice extent‚ decreases in the extent
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Polar Bears The polar bear is the largest and most carnivorous bear. It is a marine mammal. The polar bear is found throughout the arctic region including Alaska‚ Canada‚ Russia‚ Greenland‚ and Norway. Polar bears can be as tall as 6-8 feet tall. They can weight can vary from about 200-1‚760 pounds. But‚ when born they are 12 to 14 inches long and weigh around one pound. Polar bear’s lifespan ranges from 20-25 years old. Unlike other bears polar bears do not hibernate during the winter. They are
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the best suited traits for their environment survive through reproduction and they pass down those qualities to the next generation. Predator and prey share the same ecological community and they evolve together. Predation is the interaction wherein one species consume another kind of specie. The prey is essential to the predator’s environment because the predator will die if it does not have a source of food. A successful process of predation
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finkenbinder 7th grade 12 may 2017 Polar Bears What animal comes to mind when you think of the arctic? Well in this case it would be the polar bear. Polar bears are the white furred‚ cold climate type of bears‚ incase you didn’t know. In this paper you will hear about the polar bears hunting methods‚ mating process‚ baby bears‚ and humans killing these animal. Polar bears live in the arctic where it is very cold. Luckily they have a “coat” to keep them warm. Polar bears have something called blubber
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explore different math techniques used in order to demonstrate the predator-prey relationship in an ecological community. These math techniques are primarily used today in information technology to solve problems that present themselves such as those of efficiency. These problems can be solved by using graph theory‚ showing the relationship between different sets and subsets. In Food Webs‚ the sets will be the animals and their relationships to one another. There are different concepts that incorporate
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species and ecosystems; polar bears are essentially the poster child for species impacted by Earth’s warming temperatures. “Earth’s 2015 surface temperatures were the warmest since modern record keeping began in 1880‚” according to independent analyses by NASA and the National Oceanic and Atmospheric Administration. Polar bears depend on sea ice in the Arctic for all aspects of their life; global warming has caused a marked decrease in the polar ice. In May of 2008‚ polar bears were listed as a threatened
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about polar bears. For example‚ is a polar bear’s fur white? Do polar bears hibernate? Where do they have their young? To answer one of your questions‚ polar bears’ fur is actually translucent. Did you know that polar bears don’t hibernate? They do have a den for their young till they are old enough to go outside to hunt for food? These questions and more will all be answered in this informational article about polar bears and their survival in the Arctic. As mentioned before‚ polar bears’
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cats. The Alaskan brown bear and the polar bear share similarities and demonstrate differences. One comparison between the bears is that the males (boars) are usually solitary animals. Except for a month during the mating season‚ mature boars live alone. Females (sows) raise cubs (one to four) by themselves and occasionally must protect their young against the males. The lone boar Alaskan brown bear usually
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evolutionary relationship and hybridization of brown bears (Ursus arctos) and polar bears (Ursus maritimus). Fast morphological evolution has been seen over the years throughout mammals of the earth‚ as it is an important driver of specialization and speciation. Ursus‚ is the genus in the family of Ursidae (bears) that includes polar bears (Ursus arctos)‚ black bears (Ursus americanus)‚ and brown bears (Ursus maritimus). The polar bear and brown bear specifically
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respect us humans give to each others home. Animals such as Polar Bears are losing there natural habitat‚ and us humans are causing it. Our selfish acts are contributing to the loss of the Artic ice‚ which is vital for the Polar bears survival. The Polar bear population is quickly declining and we must take action‚ and make a change to our way of life to make it easier for the Polar bear. The main reason why the Polar Bear population is quickly declining is because of climate change
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