Polar Bears: The Evolution Of A Polar Bear

Many species of mammals reside in Alaska. One is of the bear species, the black bear. Black bears have a medium to heavy frame with large ears and powerful limbs. The black bear has a coat that can differentiate from brown, cinnamon, blond, grey-blue, and of course, black. They can adapt to their environment easily but are normally found in forested areas. It has a diet that consists of fruits, buds, berries, nut, insects, and food lest by humans. They are incredible climbers that can use their claws to extract food from the trees. Black bears can weigh from one hundred twenty to six hundred sixty pounds and get to be as tall

The arctic fox showed strong adaptations due to its ability to live in a harsh biome that consists to only a bit of plant life. The Polar bear is a top of the food chain carnivore that feeds among seals and fish.

Only about 1700 species of plants live in the tundra, and only 48 species of animals. Many animals in tundra hibernate in the winter, and many more animals migrate to a warmer climate for a certain amount of time. The types of animals in tundra vary from polar bears, to snowy owls, to arctic foxes. These animals have special adaptations such as dense fur to stay warm in winter, and reduce heat loss. Other animals dig holes that they use for warmth, protection and shelter. The snowy owl even grows an extra layer of feathers over its normal one to ensure it stays warm during winter. These techniques that animals use allow some species to survive in the tundra year

Many, many animals are going endangered and even extinct because of human caused climate changing. One of those notable examples is the polar bears, which only have a population of 20,000-25,000. The reason polar bears are going extinct is because warmer temperatures in the north is causing the ice caps to melt more, and in the summer, polar bears use the ice caps to travel to get food after hibernating. But if the ice caps melt too much and break away, then polar bears

Grizzly bears are a dominant species in their niche. They are located in the north america deep into the forest. There favorite food is salmon. There ecosystem is filled with all sorts of other wildlife. Grizzly bears are also efficient in the ecosystem.

One of the main reasons polar bears are going extinct is because they aren’t getting the right amount of food they need to survive. Seals, the main food source for the polar bears, are animals that depend largely on the algae that grows on the ice of the Arctic. With the ice content slowly depleting, there isn’t enough seals to sustain the polar bear population. One of the

Climate change, specifically warmer temperatures, has extensively altered these habitats by reducing sea ice extent, thus affecting polar bears since they use it as a platform to travel, hunt, and rest. Changes in the timing of sea ice formation and break up limits the amount of time bears can feed off of seals during late and early summer, hence limiting the amount of fat they are able to store for later seasons. Lower rates of food intake and storage correlates to low reproductive rates, and since females do not have sufficient fat and mass required for successful parturition, they abstain from

There are 3 types of polar bears: ones with thick coats, ones with thin coats and ones with medium coats. It is fall, soon to be winter. The temperatures are dropping rapidly and the bears must be kept warm, or they will freeze to death. Many of the bears have had 2 cubs each but due to the extreme temperatures, many mothers only have one cub left.

In addition, a bear happens to be a hibernating animal. Nevertheless, they only hibernate in the winter. Also,they happen to be endangered in certain countries,despite they are put in captivity and killed and they can be hunted by numerous people. Also bears are mammals since they give birth to live animals. Plus there exist to be various types of bears such as black bears, grizzly, panda, polar, and sun bear. Also a bear lives in caves, and trees.

Second, Kermode bears are not polar bears or albinos. the Kermode bears the might look like a polar bear or an albino but

The sea otter is a marine mammal that lives in the northern and eastern coasts of the North Pacific Ocean. They are the heaviest members of the weasel family but are some of the smallest marine mammals. The sea otter has no blubber and the main way to keep warm is its thick coat of fur which is not like most other marine mammals. Did you know the sea otter has 150,000 strands of hair per square centimetre, because of this the Sea otters have the thickest fur of any mammal. In the Maritime Fur Trade, which would eventually kill approximately one million sea otters, began in the 18th century when hunters and traders began to arrive from all over the world for otter pelts, which were one of the world 's most valuable types of fur. The

The bottlenose dolphin has made adaptions for its need for energy, need to reproduce, predation, and abiotic environmental factors. There are three adaptations for abiotic environmental factors. The first one is that the bottlenose dolphin will rapidly emerge from the water to dive back in as a way to save energy so they can swim faster. They also just do this for pure fun. It is common for dolphins to have a limited amount of motion but because the bottlenose dolphin only has two out of seven neck vertebrae fused, it provides them more flexibility at the neck. They are also covered in dense blubber. This blubber helps them stay warm in cold sea levels. There are two adaptations that these dolphins have made to help their need for energy. Dense

This particular bear is a subspecies of the black bear. It has dark nose pads, white or creamy fur, brown eyes, and nearly white claws. This kind of bear is quite rare and maybe about 100 exist near British Columbia. It’s scientific name is the Ursus americanus kermodeii. The few white bears that live outside of British Columbia is only about one in a million.

The grizzly bears adapt to their environment by hunting down their own food. They hunt down carcasses of caribou, moose calves, walruses, ground squirrels, and salmon as well

How does climate change affect Arctic animals? Climate change affects Arctic animals drastically by destroying their living habitat and food sources. Polar bears are having a hard time finding food because the ice caps are melting. They use the ice to rest on while hunting for seals, but since there is less ice it’s causing the polar bears to drown from exhaustion. Walruses can eat up to 200 pounds of clams each day. Clams are usually found near the continental shelf but with ice caps melting it is getting harder for walruses to find