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 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. Continue reading with a Scientific American subscription. Grizzlies, on the other hand, can eat whatever they want. 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. 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. Hunter Didji Ishalook, 25 . Besides using this article for a sub plan, this resource also helps promote science literacy which is emphasized in many curricula including NGSS and TEKS standards. 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 can type in their answers directly in the Google Slides. With global warming and sea-ice declines, it becomes harder for polar bears to hunt their preferred preyseals. Polar bear quiz. Each article spans two pages in total with 1 and 1/3. Sightings of this hybrid species which has been dubbed either a grolar bear or a pizzly bear have become more common in recent years as the Arctic has warmed at twice the rate of the global average. 7. The various concerns and risks surrounding fracking are discussed as well as the stance different countries have taken on the fracking issue. 0000011322 00000 n 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. These and the other fascinating negative effects of space living are discussed. For polar bears, the sea ice is a crucial platform for life. 0000001343 00000 n Also discussed is the link between Zika and microcephaly (babies born with small heads) which is the major concern with the Zika outbreak, and the potential for Zika to turn into a pandemic. and the need to publish his findings because Alfred Russel Wallace began coming up with the same theory of evolution by natural selection. Sometimes, pregnant females dig in the sea ice to create maternity dens, where they give birth and take care of their cubs. Students will learn about the different types of fat in the body, their functions and the issues that can arise when fat content in the body becomes imbalanced. Article #26 Tanning, UV Radiation and Skin Cancer. Students can type in their answers directly in the Google Slides.These EIGHT ECOLOGY ARTICLES with questions provide a re, Updated to Include a Distance Learning Option. They will also learn about who is most at risk for this condition and they will be given examples of people who have suffered from hyponatremia. Their paws can often be dark too or at least around the toes. The graph below shows the onshore arrival and departure of polar bears on Baffin Island relative to dates of sea ice advance and retreat. 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. The original version of the story misstated the name of the Montana basin. 0000002556 00000 n 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. Water The two page format makes it economical for printing and provides a length that students willingly read and complete. Article highlights include: Carson's duel passions for writing and nature as a child; her academic achievements; taking a job with the U.S. Bureau of Fisheries to help support her family; her budding and acclaimed career as a writer; her concern for the widespread use of DDT and other pesticides; her need to make the public aware of the dangers of pesticides by writing a groundbreaking book called Silent Spring; her battle with intestinal and breast cancer during the four years it took to complete the book and how Silent Spring inspired a new young generation of environmental activists. Article #38 Climate Change and Pizzly Bears. In a sign the world is either evolving or ending, grizzly bears and polar bears are mating, and now pizzly or grolar bears, depending on your preference, are spreading across the Arctic. A great article for discussing ecological and environmental issues. Failure to comply is a copyright infringement and a violation of the Digital Millennium Copyright Act (DMCA). Updated to Include Distance Learning Options. In cases where warmer temperatures are bringing species together, human intervention should be carefully thought through, he added. Humans are doing a lot more than warming the planet, so hybridization is not the only issue that has the potential to decrease biodiversity. Reprinted from Climatewire with permission from Environment & Energy Publishing, LLC. Their findings show that the two bears split into distinct species around 1.5 million years ago, with the . Students will learn how a sample of someone's breath can contain compounds released from cancer cells, how sensitive dogs are to scents, how dogs are trained to detect cancer compounds in samples of patients' breath and what other things a dog's sense of smell can be used for. They will also learn about why dung beetles are important to ecosystems. First seen in the wild in 2006, this polar bear-grizzly hybrid is more resilient to climate change and better suited for warmer temperatures, according to paleontologist Larisa DeSantis of Tennessees Vanderbilt University. 0000044429 00000 n 0000008401 00000 n It's the climate change diet and scientists say it's not. But as waters in the region warm, rainbow trout have swum up from the western lakes where they were introduced decades ago to cutthroat native grounds. By Adam Pockross. Knowledge awaits. 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. Students can type in their answers directly in the Google Slides. These new animals, which carry the genes of polar bears, have been named "pizzly bears". Article #10 Facebook Blues: Is Facebook Making You Unhappy? You may NOT electronically post this product online including to teacher blogs, classroom websites or school networks. This gruesome tale will enthrall your students and teach them about animal adaptations and parasitism at the same time. Article highlights include: his numerous failed attempts at studies and his father's disappointment in him; his eventual success at studies into the natural world; his voyage on the HMS Beagle; his return to England to scientific acclaim and respect; ideas that influenced his development of his theory of evolution by natural section (Lyell, Malthus etc.) PLEASE CLICK THE PREVIEW and then zoom in to read a part of the article to see if it is appropriate for your classes. Some interesting studies are also discussed which examine how lowering certain hormones affect libido and attachment. Climate change is known for swelling the oceans and fueling extreme weather, but it may be also causing the curious emergence of a new type of bear in the Arctic. Article #11 The Making of Human Hermaphrodites. Students will learn about the challenges of designing food for astronauts, the requirements that space food must meet (like taking up very little space and having a long shelf-life at room temperatures), the different categories of space foods, how different equipment must be made for eating a meal in microgravity environments, and why food in space doesn't taste as good as it would on Earth. HT0}D BZ[EmUbXk;M)o\ But some scientists say the two bear species are breeding more often because climate change is causing them to cross paths. An odd-looking bear shot last week by a hunter in Nunavut has turned out to be a grizzly-polar bear hybrid a rare find that a researcher says is becoming more common. Image of the Day 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. 0000070925 00000 n They will also read about how the immune system aids the laser tattoo removal procedure to help get rid of tattoo ink. We didnt see it much in the past but we are now. DeSantis deduced this by analyzing the skulls of 20 polar bears, some of which were 1,000 years old. Students will learn about the differences in the three types of tears humans produce, the composition of these tears and their different purposes. Students will learn about the challenges of supporting human life in a space craft. If your child will play baseball or softball this spring, youll need to stock up on appropriate clothing and equipment. 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. Snow and Ice "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. Are bills set to rise? This is especially seen in bird populations like peafowls and birds of paradise where the males exhibit extraordinarily beautiful plumage and intricate and interesting courtship behaviors. Only purebred dogs are allowed to compete at the Westminster Kennel Clubs annual dog show. Polar bears are the largest bear species and are supremely adapted to their Arctic habitat, whether they are prowling the ice or swimming in the sea. Sie knnen Ihre Einstellungen jederzeit ndern, indem Sie auf unseren Websites und Apps auf den Link Datenschutz-Dashboard klicken. warmed at twice the rate of the global average. Understanding how climate is different from weather is key to understanding the evidence that tells us climate change is happening. The bears are more resilient to climate change and better-suited for warmer temperatures, paleontologist Larisa DeSantis said. 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. 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. Grizzly bears and polar bears only diverged 500,000 to 600,000 years ago, so the two species can mate and produce viable offspring. Have employers used high inflation as cover to make excessive profits? Scientists believe the pizzly arose when polar . Mr Servheen said not very much was known about the grolar and pizzly bears, as little contact had yet to be made between them and humans. 0000017861 00000 n Laidre and colleagues classified fatness on a scale of 1 to 5. Heat Rather than growing a new branch on the [genetic] tree, you have two branches growing together, he said. Are you getting the free resources, updates, and special offers we send out every week in our teacher newsletter? As Live Science notes, The rise of the pizzlies coincides with polar bears decline. They noted that the number of polar bears in the wild are expected to decrease 30% over the next 3 decades. Polar bears survive on seals found in sea . "The ones that have been seen, and there haven't been too many so far, are usually lighter in colour," Mr Servheen said. We are looking at an evolutionary change in the long term where overlaps are increasing and polar bears dont have a lot of options. As this happens, it makes way for grizzly bear territory to expand further north which increases the interaction between the two species, with possible mating opportunities. "But they seem to be more common now," he said. 0000009276 00000 n SCIENCE Articles Vol. (Thanks D'Niessa S.). They usually wait on Baffin Island until the ice forms again so they can leave. The hybrids retain features from both the species -- pizzlys are short-furred bears that are more capable of dealing with warmer temperatures compared to a grizzly. 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. Climate change is bringing bear species that have mostly lived apart into mating proximity: The polar bear population in Canada's western Hudson Bay region is falling, partly due to the declining ice. A threat to genetic diversity? Also discussed is the reason why women, in general, are less pigmented then men. 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. This means that they are being filled with large quantities of environmental poisons, and that forms a threat to the polar bear's existence. New pill cuts cholesterol, heart, Biden expected to tighten rules on US investment, Scout Motors picks South Carolina for new $2B EV. 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. 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. (2) In school suspension plans that are handy for those unexpected times. They will examine the difference between totipotent, pluripotent and multipotent stem cells. Article #37 The Chemistry of Fireworks Students will learn about the various components of a firework and their role in the function of the firework. However, due to climate change, they're becoming a lot more common. Students will learn about morbid obesity and the two main types of bariatric procedures (restrictive methods and malabsorptive methods) that are used to treat this condition. This can affect their overall health and reproductive success.. Climate change fills polar bears with toxins The melting ice around Greenland has changed the polar bear's diet. Article #32 Is Life Better Without Pain? Article #9 Diamonds, the Truth Behind the Bling. Lastly, they will read about the exciting advances in stem cell research opened up by the advent of IPSCs (induced pluripotent stem cells) which helps bypass many of the ethical issues in stem cell research. Similar trends have been observed between golden-winged warblers and blue-winged warblers. 1. A recent study published in the Proceedings of the National Academy of Sciences found that climate change affects the bear species' habitats and mating behaviors. Flight Center, NASA Earth Observatory (2019, September 24). Students will learn about how some fish are able to change sex from male to female or from female to male. One example is the change in color of the peppered moth from its light colored form to its dark colored form. The team tracked polar bear movements across the bay over the past two decades. This science article / sub plan comes in two versions with full answer keys: 1) Easily printable PDFs, as well as 2) Google Slides. Heres How To Choose, Where To Buy & More. 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. With climate change pushing polar bears toward the brink, nature has devised a new animal to help preserve the species the Pizzly Bear. '33g;62.`| /Qs?A;Ol3RreAl>r{%,"i(V[&T-W5W.9E2(qP UZ. Copying for more than one teacher, classroom, department, school, or school district is prohibited. 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. 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. This story has been shared 134,090 times. Story by Kasha Patel. The event horizon and singularity is also explained as well as the classification of three types of black holes. 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. A great class discussion can ensue from this. 0000001451 00000 n Cold case: Who murdered this man on Lookout Mountain? Moreover, its also more adept at foraging for food that involves a varied diet. Good news for the polar bear Article #4 Dung Beetles: Where Did All the Poo Go? Regardless of its pros and cons, the truth remains that the change in climate due to human intervention is affecting the lives of the flora and fauna in a paradigm-shifting way. They hunt for seals by finding their dens or sitting next to gaps in the ice, waiting for the unsuspecting prey to pop up. We've received your submission. "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.". 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. Kade was a fit 31-year-old when he died from a heart attack, 'Please confirm what Muslim refers to': Why Ali's birthday payment for his nephew was flagged by his bank, Protests break out in Iran as more schoolgirls hospitalised after suspected poisoning, Anna called police to report an assault, but it backfired and she lost her home, Sherpa are world famous for their work, which is synonymous with their name. Students will learn about the science of tattoos. Terms of Use: This document is for personal use only and may only be used by the original purchaser. We interviewed our tech expert, Jaime Vazquez, to learn more about accessible smart home devices. 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.
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