How Are Polar Bears Adapted To Their Environment

The polar bear possesses a low, flat skull with high-sitting eyes which is best suited to a semi-aquatic life. This also benefits the Polar bear by enabling them to put their heads into puppy dens or breathing holes.

The anglerfish and polar bear adapt to very extreme enviorments. The polar bears have to adapt to very  cold weather. The anglerfish have to adapt to the very  little food source they have in the deep sea. They both have devoloped many features that can help them while they live in these extreme enviroments.

White bears require a variety of physical characteristics to survive in the harsh environment of the Arctic. Large, wide paws with bumps allow them to distribute weight and grip more efficiently. Water resistant fur with a luminescent quality keep the bear warm and dry. Additionally, Sharp and powerful teeth have the ability to penetrate hard flesh. These special features allow not only the ability to thrive in a difficult environment, but also are important for communicating with other species and another bear.

The Polar Bear are found on the icy coasts that surrounds the North Poles and as far south as Hudson Bay. Around 60%of Polar Bears can be found in Canada with the remainings throughout Greenland, Alaska, Svalbard, and Russia where tend to be close to the ocean across the icy fields. The habitats are affected by human encroachment by hunting , and releasing chemical pollutants into the water.The Polar Bear eats Seals, Walrus, and Seabirds. Polar Bears can live up to 20-30 year. Polar Bears have a lot of fur and their fur is clear, white, or yellow. The Polar Bear is 6.5 ft-8.3ft. they can weigh up to 330lbs -1,322lbs and they can swim up to 25mph.

The brown bear acquired a mutation which is a permanent change in the Dana sequence. The mutated trait turned their coat white in order to bland into the snow; this is the reason for the polar bears white fur. A mutation also caused their teeth to become better shaped for ripping apart seals rather than munching berries. Their white fur allowed them to camouflage into the snow-covered surrounding giving them hunting advantages. Scientists believe that at first these bears scavenged seal carcasses that had washed ashore, and gradually began to hunt the seals by waiting at the water’s edge as the seals surfaced to breathe. This is an important step into the evolution of this new subspecies of bear. The bears evolved these changes relatively quickly because they had to adjust to extreme conditions and a harsh environment.

There are not many creatures in the world that have the ability to not only survive thirty-two degrees below zero temperatures, but live in this climate as well. Among penguins and seals, polar bears are apart of the group of creatures that live everyday life in these freezing conditions. However, polar bears were not always able to do this. According to the Public Broadcast Service (PBS) website, polar bears evolved from brown bears through microevolution. Microevolution, by definition, is “small-scale evolution that occurs from one generation to the next” (Larsen p. A15). Due to the discovery of fossils, it is believed that brown bears evolved into polar bears between 70,000 to 100,000 years ago. This evolution can be seen by the change of fur color from brown to white to blend in while hunting for food and by the growth of a thicker, warmer coat to protect against the cold temperatures (PBS). This all occurred because of an event called the “ice age”. However, in the year 2316, an event called “global warming” will cause a much different evolution. Global warming is a phrase used to describe the ongoing, subtle rise in temperature of the earth and it’s oceans. Because of the small efforts being made to slow down global warming, nearly all of the ice caps in the ocean will most likely be melted by the year 2316. With polar bears only being able to survive by living on polar

Global warming affects polar bears in antarctica by making the icebergs melt. It make them have to swim for a long time in the ocean to get to a iceberg to rest. It also causes less polar bears to survive. There is also not enough food for the polar bears and its family. we can stop global warming by using cars less to get around so that the pollution does not go into the air. You can use less electricity and use the energy from the sun. you can use less water from the sink or the shower. You can use less heat. To stop that we can use hydroelectric power, solar power, and wind

The polar bear is a burly white bear that lives in the lands surrounding the north pole. The polar bears is threatened species because their population is decreasing due to sea ice melting

Many species of animals have had to adapt to their living enviroments. Some animals such as anglerfish, have had to go through major adaptations by developing a fishing pole like spine, descending from the middle of it's head. Others such as polar bears have had more of a minor adaptation such as, learning to bury themselves deep into the ground into small chambers. Both polar bears and anglerfish have had to go through many perplex yet astonishing adaptations.

Polar bears are one of the most endangered species in the IUCN states this is due to Global warming which most of us are still ignorant about, It has a climatic impact on the Arctic by the rising temperature which results in melting the ice glacier and these glaciers are the homes of polar bears that have been disappearing and shrinking making it

Artic Polar Bears have made many adaptations to live in the harsh climates of the Artic. These Polar Bears live in the northern areas of the world which is some of the harshest climates in the world.

The average temperature of a polar bear is 37°C, they are able to maintain this temperature by the thick  layer of fur they have, they also have a tough hide and a insulating fat layer. This insulation is able to keep the polar bear warm in temperatures that drop to -37°C. However as polar bears have a very thick layer of fat they can overheat and can die because of this, so the way they are able to keep cool is they do not travel for too long at a slow pace. Doing this stops the polar bear from overheating. If there is excess heat it will be released through the nose, ears, muzzle, footpads, thighs and shoulders as these areas do not have any fur covering it and these areas they have blood vessels which are located close to the skin. Another thing they can do to cool down

The polar bears are dying rapidly, and if we don’t start thinking about the environment then they will blow out to extinction. Polar bears, known as the bears of antarctica, are magnificent animals. They are the top consumer for most prey. Without them, the secondary consumer would overpopulate and eventually lose control and take over.

To begin, the physical description of polar bear is quite interesting. The normal size of the bear is 7.25 to 8 feet for the head and body and 3 to 5 inches for the tail. Also, their weight is typically 900 to 1,600 pounds (“Polar Bears”). These creatures may appear to be white; however, their fur actually has no pigmentation and is transparent which means it reflects visible light. As a result, they look white due to the snow and ice surrounding them. When their fur is clean and the sunlight is radiating on it, they look the most white. They also can look yellow after feeding on certain prey and receiving their oils. Their fur is also a key adaptation for survival because it allows the animal to withhold heat inside its body. Not only that,

Only from the literal definition, the evolution is a process which something passes by degrees to a different stage, especially a more advanced or mature stage. For instance, in the ancient time, it is because the dinosaurs had already deracinated so that other animals who survived evolve in order to comfort to the times. Among these animals, apes are a typical example of evolution as they gradually develop to become todays’ human. Nonetheless, at present, it seems that it is not exceedingly easy to feel the existence of the phenomena of evolution. Actually, it exists in many places, such as Arctic Polar, Alaska, and Canada etc. In Canada and Alaska, numerous “grolars” were founded, which are the descendants of polar bear and grizzly bears, and this new specie is the result of a type of biology evolution.