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Compare And Contrast Polar Bear And Grizzly Bear

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Development and Growth of each individual

These unique mammals are naturally built to be at the top of the food chain. The Grizzly bear has its sharp claws as well as its humped shoulders and back that gives the animal its brute strength not to mention its razor sharp fangs which are deadly when used. The polar bear has its strong thick claws and it also has sharp long carnivorous teeth that are perfect for shredding flesh. These mammals both have the essential tools for survival, but they aren’t born a threat. Each bear has to start off small and grow just as any other organism. The big ferocious Grizzly starts off as a vulnerable cub that lives under the protection of its mother. Newborn cubs are surprisingly hairless when they …show more content…

Which animal has the evolutionary advantage you ask? Both bears are both equipped to be the top of the top, but one has the advantage over the other. The grizzly bear known for its brute strength and surprising speed definitely makes it a contender to be evolutionarily better. Then you have the somewhat graceful polar bear known for its patience, smart hunting skills, brute strength, and ferocious sharp teeth. As I’ve stated both animals are equipped and both have some very similar attributes. Regardless of their similarities one bear is better than the other. From what I’ve researched on the internet to what I’ve read in our Campbell biology book, I have determined that the grizzly bear has a few advantages over the polar bear. First off the grizzly bear being omnivorous gives it an automatic advantage. Polar bears diet consists only of seal, so when the seal are scarce in the region they basically have to eat what they can find, rely on stored body fat, or they starve to death. Grizzly bears rely on plants and animals mainly plants, so if there is a decline in there plant food source they can rely on the animals they hunt or if there is a decline in the animals they hunt they can rely on the plants they usually eat. These food options give the grizzly bear and evolutionary advantage, but it’s not the only one. Polar bears don’t like being in warm climates and tend to wind down when its warmer, so when the climate starts to get warmer they go into hibernation whereas the grizzly bear goes into a state of dormancy. Hibernation is when the animal is in a state of inactivity that decreases its metabolism or metabolic rates. The organism’s body temperature, heart rate, and breathing all slows down. Hibernation may last a few days, weeks, or even months. Dormancy on the other hand is when an organism’s growth and physical activity comes to a halt based on conditions or predicted conditions. This

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Bears Are Us Paul and Pete have been life-long friends who attended college together studying wildlife biology. After they graduated from college, they both took salaried positions within the U.S. Forest Service. During this time, they decided to dedicate their spare time to understanding and appreciating the protection of grizzly bears. Paul and Pete have formed a recognized partnership, by doing business under the fictitious name of “Bears Are Us”. Although they lack written documentation, the joint management of the organization involves collecting donations, conducting presentations, selling books and prints, writing articles, and actively promoting other events related to the protection and benefit of the grizzly bear.

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Help with loosening the dirt when digging in the ground. The grizzlies also help with controlling populations of small animals. Pros and cons of grizzly bears. The first pro would be that they bring biodiversity among the large predators. They sometimes have a very little effect on

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Baseball, America’s greatest pastime, has been documented in thousands of movies; however The Sandlot and The Bad News Bears capture the most memorable aspects and cruel realities of little league and backyard baseball before the sport became a hollywood enterprise. The Sandlot shows baseball in its purest form, a group of neighborhood boys playing a never ending game and playing for the love of the game. The Bad News Bears represents the pains of little league baseball, from learning what a baseball is, to finding a select few athletes who take over the team to win at all costs. Both movies are classics in the baseball genre of film and are alike, yet so different that they are entertaining for all.

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Kermode bears are important for many reasons. The idea of the Kermode bear started with Frances Kermode of the royal British army the bear was named after him because many people thought he was very important. Sometimes these bears can help states attract tourist which helps the state raise money to save the bear’s habitats and the bears themselves from being endangered. These bears are important to people in so many different ways like the bears help hunters in hunting season, they also help give people the meat and bones they need they need to survive and to help make a profit (Local Distilleries’ Fight for Spirit Bears). The Kermode bears are also called the spirit bear because of their white ghostly look which makes them important to some

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Those rats are numerous.” Lewis would continue to describe that the prairie dogs covered almost 4 acres and created little holes in the ground. The Corps Of Discovery also encountered a fearsome animal known as the grizzly bear. In another journal entry, Lewis describes that Private Willam Bratton had “shot a brown bear which immediately turned on him and pursued him a considerable distance but he had wounded it so badly that it could not overtake him.” The grizzly bear was the most feared mammal among the group, as it stood taller than a human and was resilient to gunfire.

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the Kermode bears the might look like a polar bear or an albino but

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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.

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Plus, bears can run up to 30 mph. In addition bears seem to be not the fastest climbers up to 3 mph. For instance, a bear is extraordinarily strong it can knock a person 's head off in one swipe. In addition, keep your distance when you spot one and that is how athletic a bear can become.

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When people isolate themselves from society they develop similar characteristics. In Into the Wild by Jon Krakauer, Christopher McCandless, the main character graduates as a top student and makes the choice to give away all his money to charity as well as leaving behind his belongings instead of pursuing a career. He then travels out to Alaska, journaling his experience in the wildness and changes his name to Alex. In the movie Grizzly Man, Werner Herzog uses footage shot by Timothy himself to document what inspired him to live with the wild bears in Alaska. One of the bears Treadwell takes care of tragically kills him; his footage gives a stronger look at nature and its harsh realities.

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The berries that the bears snack on vanishes. This means that for bears they need to get fat and food before winter so then they will be ready to hibernate for the long winter season. In conclusion, This is why particularly in Alaska, bears need to stock up on food before winter comes because, need to stock up on food before winter comes because when winter hits food goes away, the weight they gain during summer and fall helps them

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As a consequence, these animals are now forced to spend more time on shore scavenging for food, often going without while awaiting new ice to form in the fall. There is also growing concern for polar bear cubs that are thought to be incapable of swimming the increasingly greater distances in open water between shrinking ice floes. As evidence, they offer the growing number of very young polar bear carcasses that they notice being washed up on shore. Many mother bears also appear to be dangerously thin and less able to fend for themselves and their young. This situation is quite noticeable among polar bears along the western shore of Hudson Bay, especially around the town of Churchill Manitoba, a location where polar bears traditionally spend the late months of fall foraging on shore awaiting the freeze-up, a freeze-up that now comes later each year.

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Grizzly Man is a documentary film released in 2005 and followed a bear activist named Timothy Treadwell, he decided that he wanted to live with bears in Alaska. For thirteen years, during the summer month, Treadwell camped in Katmai National Park and Preserve in Alaska. During this time he had to hide from the authorities, he was on a personal mission in order to better protect the population of grizzly bears. He believed the park service rangers were not doing their job well and it was his duty to go out into the wilderness. The film depicts the past by including the original footage from Treadwell, this is because he always had the movie camera with him.

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Bears with thicker coats have a higher survival rate A population will change over time. Survial rate of bears with thicker coats rises, population of bears with thin coats will gradually decrease 3. In ostriches, there are 2 types: ones that run fast and those that run slowly.

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Adaptation is the key to an organism’s survival. It is the only way that organisms can advance with the ever changing environment. According to Charles Darwin’s theory of evolution by natural selection, the organisms that obtain inheritable traits which permit them to adapt better to their habitat are more likely to survive, reproduction and pass these traits to their offsprings. Thanks to dedicated biological researchers, veterinarians and well-advanced technology, we now have incredible new insights into the life of the polar bears.

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As the world we live in today continues to warm up, the problems surrounding the survival of the world’s beloved polar bear continues to grow. Over the past twenty years, we’ve seen a change in the number of polar bears in the Arctic and have witnessed a decrease of the amount of Arctic ice in the sea. Many scientist have come up with ideas to tackle the problem, but there hasn’t been a solution that has greatly influenced the predicament at hand. Ultimately, when discussing what to do about the endangered animals, it is valuable to consider what the species needs in order to remain; a healthy population and genetic diversity. Andrew Derocher, biologist at the University of Alberta, and the rest of his team have come up with a few ways to combat these needs.

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