NASA Earth Observatory images by Joshua Stevens, using data courtesy of Kristin Laidre and Harry Stern at the University of Washington, and sea ice data from the National Snow & Ice Data Center (NSIDC). In some cases, hybrids are better adapted to cope with changing landscapes. Science Sub Plans - 52 Articles MEGA BUNDLE | Printable & Distance Learning, Ecology Articles - 8 Sub Plans BUNDLE | Printable & Distance Learning Options, Science Sub Plans Articles - Vol. The bears are "more resilient to climate change and better-suited for warmer temperatures," paleontologist Larisa DeSantis said. Are you getting the free resources, updates, and special offers we send out every week in our teacher newsletter? hb``Pg``(p014$Qu(f`d[+.3e,p``: $"~'mnj`tP$\[ endstream endobj 5 0 obj <>>> endobj 6 0 obj >/PageWidthList<0 612.0>>>>>>/Resources<>/Font<>/ProcSet[/PDF/Text]>>/Rotate 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 7 0 obj <> endobj 8 0 obj <> endobj 9 0 obj <> endobj 10 0 obj <>stream Only animals that were already generalized or able to adapt survived, lamented DeSantis. The Arctic sea ice cap is a large area of frozen seawater floating on top of the Arctic Ocean and its surrounding seas and straits. Reprinted from Climatewire with permission from Environment & Energy Publishing, LLC. 0000044429 00000 n 0000009276 00000 n 5 min read A hybrid polar-grizzly bear, known as a 'grolar' or 'pizzly' bear (Getty) Back in 2006, a strange polar bear was seen in the Northwest Territories of. Thanks for contacting us. "As you know, as the climate warms there is less and less sea ice in the Arctic," he said. 0000018199 00000 n A great class discussion can ensue from this. Grolar bears: Climate change could be behind grizzly-polar bear hybrid, scientists say. 0000011209 00000 n Article #26 Tanning, UV Radiation and Skin Cancer. While polar bears have longer skulls in order to grab seals out of the water, their molars are smaller than is typical for their body size because all they eat is blubber all day. Conventional drilling versus fracking is compared. It is information rich and written to engage even reluctant readers. 0000006024 00000 n The offspring share similarities in appearance with both parents. Adventures in the Arctic: 6 Questions with Kristin Laidre. The bears are "more resilient to climate change and better-suited for warmer temperatures," paleontologist Larisa DeSantis. The researchers found larger litter sizes when the mothers were in a good body condition and when spring breakup occurred later in the year, meaning bears had more time on the sea ice in spring to find food. Heat An analogy is used for easy understanding. They found that most bears follow the seasonal growth and recession of sea ice to end up on Baffin Island in the fall, when sea ice is usually at its lowest extent. And, their versatile brown brethren, whose range extends from Alaska down to Southern Wyoming, are better suited to the changing terrain caused by climate change. They will also learn about why dung beetles are important to ecosystems. Arctic regions have warmed twice as fast as the rest of the world, so seasonal sea ice is also forming later in the fall and breaking up earlier in the spring. We acknowledge Aboriginal and Torres Strait Islander peoples as the First Australians and Traditional Custodians of the lands where we live, learn, and work. Climate change fills polar bears with toxins The melting ice around Greenland has changed the polar bear's diet. Students will learn about the properties of a diamond and what makes it different from graphite, different methods of creating synthetic diamonds, and what applications these synthetic diamonds have. They will also learn about a planet in our Milky Way galaxy made up of at least one third diamond. The pizzly bear is the result of polar. Students will learn about lobotomies, why they were used, how they were performed, the people who helped develop the procedure (Antnio Egas Moniz, and Walter Freeman), the effect lobotomies had on patients and why the technique is no longer widely used to treat mental illnesses. Arterra The first one of its kind was spotted in 2006 and at the time it was considered to be a rare occurrence. The long-term trend for Arctic sea ice extent has been definitively downward. Scientists say that climate change is driving the hybridization. 0000025750 00000 n We should do what we can to be good stewards.. SCIENCE READING ARTICLES (ALL CAN BE FOUND IN THE MEGA BUNDLE): Article #1 Why We Love and Hate Spicy Foods. This means it couldn't survive in colder temperatures. Article highlights include: his poverty growing up; his only way to obtain an education was to become a monk which he did reluctantly; he failed twice at obtaining a certification for teaching but the monastery allowed him to teach despite this; the beginning of his studies into inheritance and heredity; the fortuitous choice of garden peas for his studies and the development of his Mendel's laws of inheritance. 0000005195 00000 n Heres How To Choose, Where To Buy & More. Students will read about how mitochondrial DNA has helped geneticists discover Mitochondrial Eve, about the research behind her discovery and about the implications of this research on the evolutionary origins of humans. Students will learn about extracting shale oil and gas through the process of fracking. "And then the claws are often longer than polar bear claws because grizzly bears have much longer claws, and in general the fur is a little bit darker than a polar bear.". Also discussed is how this data supports the Out of Africa theory of human migration and expansion. SCIENCE Articles Vol. Researchers hint this could be occurring since with the sea ice thinning, more polar bears are making their journey towards the south, looking for food, whereas with temperatures in the south rising, more grizzly bears are moving towards the north, looking for colder climates. Don't fear, get, Updated to Include a Distance Learning Option. Mitochondrial Eve is the most recent common ancestor of all modern anatomical humans. They will examine the composition of the gun powder which explodes to launch the firework into the air and examine the "stars" which are the metal salts that burn with various different colors when they are ignited within the firework. The maps above show the difference in sea ice extent around Baffin Bay on July 15, 1993 and July 15, 2013. Students will learn about the challenges of supporting human life in a space craft. This entire document, or any parts within, may not be reproduced or displayed for public viewing. Warmer temperatures have allowed grizzly bears and polar bears to venture to habitats they dont usually occupy and mate to form a hybrid: the pizzly or grolar bear. No, it's Alloyman! Male competition using the example of elephant seal bulls is also discussed. Students will learn about Henrietta Lacks and how cancer cells from her body, called HeLa cells, have been dividing for over six decades to produce immortal cell lines that have been used in medical and commercial research all over the world. The model took into account the relationship between sea-ice availability and the bears body fat and variable litter sizes. My other classes were interested when they read my agenda. Students will learn about the famous Marshmallow Experiments done in the 1970s. While the climate crisis may expedite the number of pizzly bears (the changing climate is causing grizzly bears to move north and polar bears to move south, resulting in more. They have the ability to fast, but if they dont eat for longer periods, they get thinner. It looks like a polar bear but its got brown paws and big claws like a grizzly, Ishalook said. The team specifically studied a subpopulation of bears that depend on seasonal sea ice in Baffin Bay. 4 Bundle - 10 Articles for 27% OFF. The ice cap tied for the sixth lowest extent on record, continuing a long-term decline. Water Engaging science articles are a good way to meet these needs. In Alaska, this has led to. This resource is very versatile and can be used for a variety of assignments like the following: (1) No prep sub plans that are easy to hand out and collect. Article highlights include: Franklin's achievements as a child; her research into the structure of coal which earned her a PhD; her apprenticeship for learning about X-ray diffraction; her appointment to work at King's College to help discover the structure of DNA; the tensions and hostilities with her research partner Maurice Wilkins; her success at obtaining excellent X-ray diffraction images of two forms of DNA; Wilkin's release of these images to a rival team (James Watson and Francis Crick) of researchers without telling Franklin; Franklin's research into the structure of plant viruses; Franklin's early death due to ovarian cancer at the age of 37 and the controversy over her not being acknowledged by the Nobel Prize committee. The Pizzly Bear, which was first documented in 2006, doesn't have as much blubber as the polar bear. But some scientists say the two bear species are breeding more often because climate change is causing them to cross paths. Scientists believe the pizzly arose when polar bears migrated south due to shrinking arctic ice, where they met up with grizzlies and mated. Then finally, the team used mathematical models to forecast future reproductive success. TEACHERS WHO HAVE USED THIS PRODUCT HAVE SAID: "Love your articles! When theres no sea ice platform, the bears end up moving onto land with no or minimal access to food. 0000002964 00000 n 0000001343 00000 n Terms of Use: This document is for personal use only and may only be used by the original purchaser. July 12, 2022 Climate change is altering the environment of North American polar bears, forcing them south, where they're coming into contact with a different type of bear. But it will be hundreds of generations before we really see a new type of bear., US ceases efforts to end global trade of polar bear parts, Original reporting and incisive analysis, direct from the Guardian every morning. Female polar bears are forced ashore up to two weeks earlier than in the early 1990s because of the early spring ice breakup. Remote Sensing. With a dingy white coat and scattered . Please look at the time stamp on the story to see when it was last updated. Specialists like the polar bear are at greater risk of extinction, especially if their habitat is literally melting away.. The bears are "more resilient to climate change and better-suited for warmer temperatures," paleontologist Larisa DeSantis . If the father was a grizzly bear then the offspring is informally known as a grolar. Snow and Ice There, they hooked up with grizzlies migrating north from Alaska. Flight Center, NASA Earth Observatory (2019, September 24). correct answer and is guessing based on words that are used in the text. Laidre and colleagues classified fatness on a scale of 1 to 5. A pizzly was first spotted when a researcher noticed a bear with the white fur of a polar bear, but the long claws, hump, shallow face and patchy brown fur of a grizzly. The map at the top of this page shows the movements of 43 tagged adult females from 1991-1997 (left) and 38 adult females from 2009-2015 (right). Article highlights include: explanation of the European Renaissance; Galileo convincing his father he should become a mathematician and physicist instead of a doctor, his invention of many interesting devices, observations of Kepler's supernova, his development of the telescope and its uses in his research, his discovery of the four largest moons of Jupiter, his discovery of the shadows of Saturn that supported the heliocentric model over the geocentric model, his persecution by the Inquisition of the Catholic Church due to his support of the heliocentric model, his recanting upon threat of torture and his imprisonment until death. 0000057313 00000 n Even if greenhouse gases were curbed immediately, sea ice would likely continue to decline for several decades because large-scale changes take a long time to propagate through Earths climate system. They will also learn about albinism and about how changing environmental conditions and determine the level of skin pigmentation in evolving populations. Article #35 An Athlete's Perfect Twitch. Students will learn about mitochondrial DNA and Mitochondrial Eve. By Adam Pockross. 11 Countries Around The World That Have Never Been Colonised By Any European Power, From Sherpas Hauling Dead Bodies, To Climbers Stepping Over Them, Scene At Mt Everest Is Morbid, Anime, Classic Games, And Porn: 6 Weird Things The CIA Found On Osama bin Laden's Hard Drive, These Are The World's Most Powerful Intelligence Agencies, India Is Everything To Me: Akshay Kumar On Renouncing Canadian Passport, Anushka Sharma-Virat Kohli Visit Mahakaleshwar Temple Ahead Of Test Match Against Australia, Kangana Ranaut Says 'Such Good Example' As Power Couple Virushka Visit Mahakaleshwar Temple, There Was 95 Percent Blockage: Sushmita Sen Survived Massive Heart Attack Due To Active Lifestyle, Aaliya Owns A Lavish Flat? We didnt see it much in the past but we are now. Were All in for Arena Reel Star. 0000002556 00000 n It is not looking good for polar bears, said DeSantis, who blames the arctic beasts decline on the melting sea ice where they hunt seals their preferred prey. ARTICLE SUMMARY: In this particular article, students will learn about how climate change is warming the Arctic and threatening the habitat of the polar bear. In 2006, Andrew Derocher was in the field with an Inuit hunter when a message crackled over the CB radio: A strange-looking bear had been shot a few miles away. They will discover that PET (polyethylene terephthalate) is the most common type of plastic beverage container and will read about PET's properties, how it is it is recycled (and down-cycled) and how it eventually makes its way into our landfills and oceans. They will learn about what characterizes each stage and the major hormones involved in each stage. The Teacher-Author indicated this resource includes assets from Google Workspace (e.g. This story has been shared 134,090 times. Pay only $1.99 for this article when you purchase it in the 52 Science Reading Articles MEGA Bundle - Saving you over 44%. On average, the bears are spending 30 more days on land now than they did in the 1990s. Animals have been interbreeding for millennia. Floral Dresses To Chic Bags - Heres How I Refreshed My Summer Closet From Flipkart On A Budget! Climate-induced changes in the Arctic are affecting polar bears, said Laidre, who was the main author of the study. Beyond speculation, two real cases of pizzly bear offspring in the wild (as confirmed by genetic testing) is discussed along with the possibility of other Arctic hybrids. You may NOT electronically post this product online including to teacher blogs, classroom websites or school networks. February 27, 2023 new bill passed in nj for inmates 2022 No Comments . The Arctic, where its effects are especially evident, is warming between two and four. Interrelated ecological impacts of climate change on an apex predator. 0000057914 00000 n Article #7 Body Fat: The Good, The Bad and the Ugly Truth. They projected that the normal cub litter size of two may decrease within the next three polar bear generations (37 years), mainly due to the projected decline of sea ice in the coming decades. In the case of cutthroat-rainbow trout hybrids, the hybrids are less genetically fit, with offspring of the hybrids struggling to survive, astudyled by researchers from the U.S. Geological Survey found. Article highlights include: details of his difficulties with authority and school while growing up; his amazingly productive 1905 year when he came up with and published four groundbreaking ideas (including e=mc2 and the special theory of relativity); an application of the theory of relativity; an explanation of the significance of e=mc2, his abandonment of Germany during the rise of Adolf Hitler's Third Reich, his emigration to America, his contribution to the Manhattan Project's development of nuclear weapons and his great regret for contributing to the nuclear bombings of Hiroshima and Nagasaki. AEST = Australian Eastern Standard Time which is 10 hours ahead of GMT (Greenwich Mean Time), abc.net.au/news/grolar-pizzly-bears-climate-change-creating-hybrids/7428354, Help keep family & friends informed by sharing this article, These engineers break their silenceafterdecade of criticism over2011 Queensland flood handling, Tens of thousands of pigs and buffalo pegged for mass culls in Kakadu, in bid to curb feral animals, With Russian forces closing, Svyat rolled the dice in the last days before Bakhmut fell. "We don't know anything about their temperament," he said. We Say, Yes! Weitere Informationen ber die Verwendung Ihrer personenbezogenen Daten finden Sie in unserer Datenschutzerklrung und unserer Cookie-Richtlinie. This resource spans two pages in total with 1 and 1/3 pages of article and 2/3 pages of questions. 0000009711 00000 n 0000006824 00000 n Its a major cause of species extinctionlots of species are now disappearing because they are being genetically swamped by other, commoner ones, said Stuart Pimm, a professor of conservation ecology at Duke University. Students can type in their answers directly in the Google Slides. In a new study published in Ecological Applications, Laidre and her colleagues described how declining sea ice concentrations are affecting the behavior, health, and reproductive success of polar bears. So-called "pizzly" bears were first spotted in the wild in 2006. A polar bears life seems simple enough: eat seals, mate, and raise cubs. This is an archived article and the information in the article may be outdated. In cases where warmer temperatures are bringing species together, human intervention should be carefully thought through, he added. The team tracked polar bear movements across the bay over the past two decades. They will also learn about the negative environmental consequences of fossil fuel use (e.g. However, due to climate change, they're becoming a lot more common. A Trending Reel Challenge That Can Win Us a Brand-New Swift? The other example is the dramatic change in the size of the giant insects of the prehistoric era to the much smaller ones we have today. Moreover, its also more adept at foraging for food that involves a varied diet. So-called pizzly bears were first spotted in the wild in 2006. 0000070925 00000 n The Oscars will air on ABC and can be streamed on ABC.com and the ABC app as well as Hulu + Live TV, YouTube TV, AT&T TV or FuboTV. They usually wait on Baffin Island until the ice forms again so they can leave. They will learn how the fecal transplant helps get rid of the infection, how fecal samples are obtained and how they are administered into the body. We know that sea ice, which is where the bears need to be, is decreasing very rapidly, said Kristin Laidre, an Arctic ecologist at the University of Washington. Scientists think that the simple explanation for these Grolar and Pizzly Bears is climate change. ARTICLE SUMMARY: In this particular article, students will learn about how climate change is warming the Arctic and threatening the habitat of the polar bear. They will also read about how the immune system aids the laser tattoo removal procedure to help get rid of tattoo ink. Polar bears have been around for a long time (first diverging from grizzlies 4-5 million years ago), surviving some very strong fluctuations of the environment, so its difficult to theorize how this could have happened without them "temporarily going extinct", but keeping their DNA within grizzly bears. 1 | Greta Thunberg and climate change reading comprehension worksheets. Article #11 The Making of Human Hermaphrodites. In . "You know, both species, they try and avoid humans and stay away from humans. The interbreeding is resulting in the birth of an entirely new species of bears, that could one day even replace polar or grizzly bears entirely. A 2017 study in the journal Arctic indicated that eight hybrids had been born of a mother polar bear who mated with two grizzlies. Laidre says that is because the ice is retreating earlier and there has been more open water in recent summers. Stirling said grizzly bears have been showing up in the Canada's western Arctic as far north as Banks Island and Victoria Island in the province of Nunavut periodically for the past 50 years. "Polar bears spend much of the winter on the ice and then when the ice goes out in the early summer, they tend to move onto land for a period of time, and then when the ice forms again in the fall, they go out on the ice again. This issue is horrendously complex because of our ability to change the environment, said Arnold. DeSantis deduced this by analyzing the skulls of 20 polar bears, some of which were 1,000 years old. As weve developed genomic methodologies, were finding that organisms are exchanging genes with other species, Arnold said. Bei der Nutzung unserer Websites und Apps verwenden wir, unsere Websites und Apps fr Sie bereitzustellen, Nutzer zu authentifizieren, Sicherheitsmanahmen anzuwenden und Spam und Missbrauch zu verhindern, und, Ihre Nutzung unserer Websites und Apps zu messen, personalisierte Werbung und Inhalte auf der Grundlage von Interessenprofilen anzuzeigen, die Effektivitt von personalisierten Anzeigen und Inhalten zu messen, sowie, unsere Produkte und Dienstleistungen zu entwickeln und zu verbessern. It is the Flathead Basin, not the Shields Basin. A threat to genetic diversity? "We're having massive impacts with climate change on loads of species right now," DeSantis said. One example is the change in color of the peppered moth from its light colored form to its dark colored form. This gruesome tale will enthrall your students and teach them about animal adaptations and parasitism at the same time. b!YrJ;4%&h3x.>Q* o8a$1>;GyDD"R# zNRqAb1*4$$'gr`&FB`N;(0wk-0_"&1NHS]t-MM b%IHkgm_=d:PF>~2H9hf}f`g pUUnlA8Yoe+?gDipy%]lN9wjMa-v+: sQ: (3) Independent work for early finishers. '(0fi>P 2p51v&!1A/4,Mz{m1Mv-?VwH[;]n/;~Svg/O.>alkF:ic2u^jGnwe$i;RsaY`?K\C9d*,S:gj;%=&>` E endstream endobj 11 0 obj <>stream With sea ice thinning, the endangered, starving polar bears are being driven . 2019 Arctic Sea Ice Minimum Is Second Lowest. and 9 more scientists. which I cannot fully describe due to reaching the text limit in this description space. The combination of warmer temperatures and vegetation growth means there is more overlap between the species and Id expect that overlap to increase, Chris Servheen, a grizzly bear expert at the University of Montana, told the Guardian. Combining the strengths of coyotes and wolves Students will learn about the health impacts of sugar, research showing that sugar can be more addictive than cocaine or heroine, the effect of sugar on the brain, how available sugar was to our ancestors, the effects of high-fructose corn syrup, an example of how hidden added sugars can be found in "healthy" meals and how to read food labels appropriately so that the sugar content can be better understood. In some cases, hybridization can lead to reduced genetic diversity in animals, according to David Tallmon, an associate professor of biology at the University of Alaska. Call it the "grolar bear" dilemma: Are hybrids caused by climate change bad for species? Students will learn about human hermaphrodites, the etymology of the word hermaphrodite, the two major causes of human hermaphrodism (46XX/46XY chimeras, the SRY gene) and other organisms that are hermaphroditic. This could be why they mated with grizzly bears, whose jaws are better equipped to eat plant tubers or scavenge carcasses when resources are scarce. Only purebred dogs are allowed to compete at the Westminster Kennel Clubs annual dog show. Students will learn how pollination occurs, how the honeybee is specialized to collect pollen, why the honeybee is used by beekeepers over other pollinators and how critical bees are for global food production. Article #4 Dung Beetles: Where Did All the Poo Go? 2023 Scientific American, a Division of Springer Nature America, Inc. Failure to comply is a copyright infringement and a violation of the Digital Millennium Copyright Act (DMCA). Denver weather: Calm today, wind and snow back tomorrow, Former home of JonBent Ramsey up for sale, Global race to boost electric vehicle range in cold, Family of Aurora man in police video speaks out, Bruce Springsteen surprises shop owner before concert, Assault weapons ban introduced in Colorado, Do Not Sell or Share My Personal Information. The various concerns and risks surrounding fracking are discussed as well as the stance different countries have taken on the fracking issue. Polar bears evolved from brown bears around 150,000 years ago and are now the largest land carnivores in the world, weighing up to 1,600lb (720kg). 1998 - 2023 Nexstar Media Inc. | All Rights Reserved. Image of the Day Perhaps the most obvious way in which humanity is altering the natural world is through climate change. Thin sea ice swirled along the east coast of Greenland in October 2012, against a backdrop of overall thinning sea ice. Some interesting studies are also discussed which examine how lowering certain hormones affect libido and attachment. 0000057567 00000 n However, some biologists disagree, saying that hybridization is natural and doesnt always produce negative results. The changes we document here are going to affect everyone around the globe.. Chris Servheen, a bear biologist and Adjunct Associate Research Professor at the University of Montana, said sightings of this hybrid bear species have been very rare in the past. 1. This is a great extension activity for classes studying the digestive system or nutrition. What we want to do is weve got to stop destroying landscape.. Usually hybrids arent better suited to their environments than their parents, but there is a possibility that these hybrids might be able to forage for a broader range of food sources, DeSantis told Live Science. If the sea ice disappears, some may be successful but a lot wont be successful. Though crossbreeding between Amazonian butterflies was not triggered by climate change, it is an example of hybridization that strengthens the survival abilities of a species. The rate at which humans are driving species to extinction is 1,000 times faster than the rate at which animals would go extinct naturally, Pimms research shows. If your child will play baseball or softball this spring, youll need to stock up on appropriate clothing and equipment. (2) In school suspension plans that are handy for those unexpected times. The bear, found at the southern tip of Banks Island in Canada's Northwest Territories, didn't look like a typical polar bear. Snow and Ice. Desantis recently published a study on the changes to polar bears diets amid global warming. They will learn about the conditions under which fossil fuels are created and what turns some organic remains into oil and natural gas, while other remains form coal. Mutts need not apply. HTn0}Wpo6E6]{V{D/e7~NX$ER< Students will learn about the science of tattoos. Students will learn about the science behind the feeling of spiciness, what chemical compound creates this sensation, the way spiciness is measured, why the desire to eat spicy foods evolved and how to cure the pain of overly spicy food. The basic purpose of dog shows is to facilitate the evaluation of breeding stock for use in producing the next generations, the organizations websitesays. This service may include material from Agence France-Presse (AFP), APTN, Reuters, AAP, CNN and the BBC World Service which is copyright and cannot be reproduced. 0000044917 00000 n Article #41 Natural Selection Explained. It also leads to cardiac muscle weakening as well as damages the optic nerves. Students will learn about the Zika virus, where it first came from, where it's spreading to, how it is transmitted, and the symptoms it produces. Electric Sunroof, Head Up Display & Other Features That Make The All New Hot & Techy Brezza A Hit. Using field observations and remote sensing, the study showed that polar bears are spending more time on land and are fasting for longer periods of time. Also discussed is the reason why women, in general, are less pigmented then men. U2:CB1M/k$1[H#zkng\J5Zpis 52E^\(4aWX.k5YzW/)eRA)2-(K{DWjQE;NW. It is competitions like these that contribute to the common perception that mixing animal species leads to maladapted animals, according to Michael Arnold, a professor of genetics at the University of Georgia. Knowledge awaits. Pizzly bears, sometimes called grolar bears, are a bear hybrid that could become more common in the Arctic as a result of the climate crisis. This perhaps marks an evolutionary 180 from when polar bears and grizzlies diverged from a common ancestor hundreds of thousands of years ago, Vital Ground reported. Polar Bears Across the Arctic Face Shorter Sea Ice Season. 0000000016 00000 n ECOLOGY Articles Bundle - 8 Articles for 28% OFF. But Mr Servheen said not very much was known yet about these 'grolar' and 'pizzly' bears. Heat Australia's oldest running coal-fired power station is about to close. 5 min read A hybrid polar-grizzly bear, known as a 'grolar' or 'pizzly' bear (Getty) Back in 2006, a strange polar bear was seen in the Northwest Territories of.

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