The bearberry’s fine, silky hairs and leather leaves help to keep it warm in the cold temperatures of the tundra…
Polar bears are extreamly well adapted tohunt their prey under water. Keeping warm is no problem for polar bears infact sometimes polar bears have to lay flat on their stomachs on the ice just to cool of. Polar bears have the thickest fur of any bear species. Their fur has two layers. The first layer, the under coat, is the closest to their body it consists of thick, plush, hair that retains heat. The next layer, the outer layer, is a layer made of "guard hairs" and are not actually hair at all they are hollow tubes. the tubes trap air for insulation andalso reflect a visible wavelengths of light in their hollow air space, which combine to make the fur whiteeven though it is in fact colorless. The white coloring provides camoflauge for the bears allowing them to blend in with there white snowy surroundings. Under their fur polar bears have black skin that absorb the sunlight and under that they have a 4-inch layer of blubber. This blubber keeps polar bears warm in the cold water. Polar bears have fur at he bottom of their feet providing extra warmth and traction to the ice. they are adapted to swim 60 miles without a pause to rest. They have have the ability to reduce their metabolic rate when the food is scarce and again when it's…
In addition, the upper blades of Ardi's pelvis are shorter and wider in length in contrast of the upper blades of apes (Ann Gibbons 39). Ardi's spine resembled to a human's spine, in other words it was both long and curved instead of short and stiff like what a chimpanzee's would look like (Ann Gibbons 39). Therefore, these modifications suggested to C. O Lovejoy that Ar. ramidus had been bipedal for an extended timeframe (Ann Gibbons 39). Even so, the lower pelvis is enormous and sophisticated alike to African apes instead of hominins (Ann Gibbons 39). Ardi's opposable big toe and sophisticated characteristics within their hands and feet determined that Ardi didn't walk similar to Lucy and still spent an extended…
But two hair samples from the Himalayas were a surprise. These hairs, both brownish in color, perfectly matched a short stretch of DNA once extracted from the jawbone of a 40,000-year-old polar bear. The hairs did not match modern polar bears. One hair came from an animal shot 40 years ago in Ladakh, India, by a hunter who reported that it behaved differently from typical brown bears. The other was collected about 10 years ago in Bhutan, 600 to 800 miles from Ladakh.”…
It has very thick, transparent fur, which makes the bear appear white. This helps the bear camouflage against the ice and snow. The Polar bear also has large canines for tearing the flesh of seals, fish and whale carcasses. Because it spends so much time in the water, the Polar Bear is considered a marine mammal. Consequently, you would expect it to have adaptations for swimming. It absolutely does. The Polar bear has several adaptations that enable it to swim. Its front paws are wide and slightly webbed to help propel it through the water. These larger than normal paws also act like snowshoes and help the bear walk over snow and ice without slipping or sinking. The Polar bear can even dive to find food and has been observed diving to depths of up to 6 feet. Once out of the water, special oils in its fur helps it dry quickly to reduce heat loss. The Polar bear has other adaptations that keep it warm as well. It has very thick skin and an extra layer of insulating fat which can be over 4 inches thick. It also has smaller ears and tail than other species of bears which reduces heat loss. A Polar bear is actually more likely to overheat than to…
Animals such as insects, bears and arctic foxes, have adapted to living in the tundra. For example, since food is scarce in the winter, bears have adapted their diets and will dig up roots or even eat seaweed found along water sides in order to avoid starvation. The arctic fox has also adapted to surviving the climate, such as having thick fur and a good supply of body fat to help keep it warm. The arctic fox also has a low surface area to volume ratio, which means less of its surface area is exposed to the arctic cold and less heat escapes the body.…
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Bears can be found throughout the world. They are generally large animals, and are characterized by a plantigrade walk which is to walk on their heels like humans, a large body, short legs, a stub of a tail, small, round ears, and forward facing eyes. There are considered to be eight species of bear. The purpose of this essay is to compare and contrast the differences between the black bears and the sun bears. The three main differences are the place where it lives, the fur color and the food that it eats.…
Snow wolves have white fur and hunt in packs like regular wolves, they eat other species and are mammals, snow wolves are one of the most aggressive species and are smart, and takes care of their pups good too. Snow wolves survive in the tundra by using their white fur to blend in with the snow and hide from enemies, and fights in packs also eats smaller animals such as, snow bunnies and snow foxes. Polar bears are very big mammals and probably the king of the tundra leaving nothing in it's path, it has white fur, and it's very protective withs its cub. Polar bears eat other species smaller than them and the women polar bears eat fish and sometimes they take and feed fish while the fathers hunt with the other polar bears and also the polar bears use their white fur as camouflage they use their big and very fat stomachs to hold food while they hibernate during the summer. Snowy owls are active during the morning especially summertime and uses it's white fur to hide from dangers. Snowy owls use it's white to camouflage and eats insects to have energy. Snow leopards are endangered species and are large. Snow leopards usually run away from it's…
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).…
Under the polar bears thick, white fur they have black skin that reflects light of the freezing arctic landscape. Their fur is oily which helps them to be water repellent; the polar bear's solid fur and a remarkably thick layer of fat under its skin protect it against the cold temperatures of the ice .The fat is important when the bear is swimming, because the fur cannot keep the insulating air trapped in it. The hairs are hollow, so the black skin underneath can absorbed light from the UV rays; these genetic traits allow them to have a better chance of survival in temperatures below zero. The polar bear’s fur grows from 5 to 15 cm long. The growth of the fur is the same amount of insulation from the cold that the polar bear receives. The physical features that defined this species include longer neck and head; this trait allowed the polar bears to reach for their prey. During the day polar bears can locate seals from a long distance. The polar bears are patient when it comes to stalking their prey. They flatten their bodies on the icy surface, their forefront feet are under them and only their hind feet provide the force when moving closer. Sometimes they push a small blocks of ice in front of them to camouflage their dark noses, or cover their noses with their white paws to avoid their prey from seeing them. Polar bears spend a lot time in water; the use of the polar bear limbs in…
The Arctic fox is known for their luscious white fur, which allures the hunters for the warmth and appearance (Angerbjörn & Tannerfeldt, 2014). The fur trade impacted the Arctic Fox population greatly because of the high quality pelt they produced (Vertefeuille, 2016). This made it a very desirable target to trade and wear for humans. However, the fur trade decreased drastically and Arctic fox populations are not as susceptible to overexploitation as before (Vertefeuille, 2016). Still, native populations hunt for this fur (Vertefeuille, 2016), since they live near the foxes in the Arctic and value its fur for warmth and accessory. The disease and genetic pollution is also another major threat for the foxes bred in captivity (Angerbjörn & Tannerfeldt, 2014). They are held in captivity to produce their furs, but the confinements of being bred in the caged areas promote those negative factors. Further problem is associated with the human interaction in North America, as Arctic foxes that are not native to the area of the Aleutian Islands in Alaska are being directly killed (Angerbjörn et al., 2012). This is because of conservation efforts regarding the bird population, since the Arctic foxes are predators (Angerbjörn et al., 2012). However, they are lessening the Arctic fox population and need to realize this before it is too late. Therefore, the human interactions with the Arctic fox increase their mortality…
The Arctic Fox (Alopex lagopus) is the smaller ‘cousin’ of the perhaps more familiar Red Fox. The Arctic Fox has thick fur, large fat reserves, and specialized heat-retaining circulatory systems in their feet to help them survive the harsh winters of the Arctic. (Arctic Fox Alopex lagopus 1)They also change their color of fur from white in the winter to gray/brown in the summer to blend into their environment. (Tannerfeldt 1-2)…
Other abiotics such as precipitation form the biome of tundra. The tundra revives, at max, 2cm of precipitation year-round. Although the tundra has such harsh conditions, animals such as an arctic fox, snowy owl, and caribou can handle them. The arctic or snow fox survives by the use of its thick fur, giving it the ability to keep body heat from escaping and allowing it to walk on ice to search for prey. With its thick feathery plumage and feathered feet or claws(something like it), the snowy owl is well adapted to the polar like niche. Finally the caribou survives by having two layers of fur, the under fur being dense and wooly and the outer coat being long haired and hollow.…
Researchers found evidence of rapidly melting ice where walruses feed. The development of the ice is significant because walruses use sea ice as a resting platform, for pups and their mothers (Butler). If walruses cannot adapt to caring for their young without sea ice the population will plummet. In order for seals to cope with global warming, they need to shift their territories to suitable ice conditions (Ringed Seals and Climate Change). Seals desire to breed is altered by warmer temperature. The seals are not having as much offspring because the average pup survival rate is…