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Polar bear

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Polar bear
Polar bear.jpg
Scientific Classification
Scientific Name

Ursus Maritimus

Introduction

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[2]

The Polar Bear or the Ursus Maritimus its scientific name is a carnivore that's native to the colder areas in the artic sea. The Polar Bears are very interesting animals, they are extremely big they male can get up to 900 pounds and are usually 6 feet tall. The Polar Bears live for 25 to 30 years. They are really unique in they way they are structured as well, there claws help them paddle on the ice. They also can travel at high speeds of 25mph. The Polar bears need fur to protect them from the amount of cold there is in their habitat. Polar Bears are very unique, and that is what the theme of this paper is. [3]

Body Design

Description

The Polar bear has an abundant body design. The male and the females are extremely big animals, and are the largest land carnivore in the world. The male which are called boars are 350kg to more than 650kg. While the female which are called Sows are 150kg to 250kg, but when sows are pregnant can be up to 500kg. The polar bear has a long head and neck compared to other bears, but there head and necks are small compared to its body. The body of the average Polar bear is 10ft, but the largest ever recorded in history is 12ft.The polar bear can be 3 colors depending on the angle of the sun, it can be light brown, white, yellow. The Polar bear's fur which s shown in the picture is thick compared to other bears, they also provide warmth and protection for the bear.[4]

The most unique part of the Polar Bear body design is it's claw. The claw is very sharp, they are 30cm (12in) in diameter. They are designed to help make it easy for them to travel on snow and the ice, and to catch prey. The feet and there claw helps them distribute the weight when they walk, it also helps them when they are swimming. The Polar Bear have 42 sharp teeth, which they obviously use for catching food, but most of the food they eat are swallowed in chunks not chewed much. The most keenest sense in the Polar Bear is the sense of smell, they use smell to catch prey, and see if any possible danger is near. They are able to smell from a mile away. The Polar Bear has an abundant body design, but it has a lot of fascination parts to it [5]

Life Cycle

New born Polar Bear

The life cycle of a Polar bear is unique. The female goes through a lot during a year. In this paragraph I will talk about what the mother has to go trough from the months of march through the end of the summer. The female has to be six years old to be fully mature to reproduce. From late March to late may the mother has to find breeders. The male Polar bears come in packs, and can often follow the mother for 60 miles. The mother choses one male polar bear that she likes, then they enter the stage of breeding. The will spend 7 to 14 days breeding, during this time period the female eats a lot, and can often gain 440 pounds. She does this because the egg will not implant without significant weight gained. During the months of June to Mid September the female does not eat very much for two reasons. One is she eat a lot in the stage of breeding she needs to fast, and secondly the polar bear primarily source of food which is called ring seals is not available. The female goes through a lot in these 4 important months.[2]

This paragraph focuses on the reproducing of the baby, and the events the mother has to do to take care of her young. In October nothing much happens the baby is in the mother. The month of November and December is when a lot of stuff happens. The female build dens to hibernate, and give birth to their young, the young is seen on the images.The female give birth in this month, the baby are incredibly small. Most female born either single or triplets. From January to mid March the family emerges from the den, and the baby is started to develop its muscle. The female go through a long year starting in late march and ending the next year in mid march. The life cycle the polar bear is interesting and has many unique parts to it. [2]

Ecology

Polar Bear breaking ice so it can swim

The Polar Bear Ecology is very unique in its own ways. The Polar Bears obviously have some abiotic requirements that they need, the Polar Bears swim, and have nostrils to prevent water from going into their noses. They have paws to help move them through the water really easily. One of the things the Polar Bears do in the water is catch seals. The Polar Bears have extremely strong jaws that they can rip the seals head of in an instant. One of the main things the Polar Bears do after they give birth the their baby's and take care of the for 5 months, is they take them and teach them how to swim and catch the prey. As you see in the picture the Polar Bear is crushing the ice to get into the water which is underneath the ice. [6]

The Polar Bears Like I said earlier prey on seals and few animals in the water. The Polar Bears are at the top of there food chain which mean they don't get preyed on by other animals, but Polar Bears often do get killed by male Polar Bears, People, and Global Warming. So when the female Polar Bear are deciding that they want to mate with a male Polar Bear there has to be a completion to see who can impress the lady. This is where all the drama happens, sometimes males who lose get very upset and injure the male and the female that will soon be mating. Some people hunt Polar Bear for fun/ sports. Though it is illegal to do so, it is sometimes done without anyone knowing. The third cause of Polar Bears death is Global Warming we the people are releasing bad stuff into the environment which do affect the Polar Bear, because of Global Warming they are losing sea ice which is their main habitat. The Polar Bear are fascinating unique animals.[7]

Habitat Range

Where Polar Bears live in the world

In these two paragraphs I will talk about what 3 habitats they live on, and where in the world they live. The first one they live on is sea ice. Polar bears live the majority of their lives on sea ice for the main reason of hunting especially seals, and other reasons are for migrating and breeding. One of the main issues that is happening to the Polar Bear is the disappearance of sea ice. Sea ice is disappearing for a couple of reasons one is climate change. Climate change affects these habitats the most. With the disappearance of sea ice, the Polar Bear population is decreasing more and more as the year goes on, and some believe in may go extinct.[8] The 2 other habitats they live in is Leads and Polynyas. Leads are cracks through the ice, the cracks can be open from a few minutes to a couple months. Polynyas are in the water that are open throughout the year, they use it for breathing and feeding.

The area in the world in which they live in. Polar bears live in areas that are very cold. Some countries are Canada specifically western Hudson Bay and in the northwestern Ontario and James bay. Its been found In Greenland and Norway. Some Polar Bear footprints have been spotted in as far as the pole, but scientist that there were only a few Polar Bears. All of the other countries that have been seen is in the picture. Polar Bears are interesting in the way the live and where they live.[9]

Video

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  1. Ursus martimus WikiSpecies. WikISpecies. last modified November 3, 2016.
  2. 2.0 2.1 2.2 No, Author.Life Cycle of the Polar Bear"Artic Kingdom". Artic Kingdom. Last updated in 2017.
  3. .Polar Bear "National Geographic" .National Geographic. No Author or No date of publication.
  4. Polar Bear Physical Characteristics "seaworld".seaworld. No author no date or last update.
  5. .Polar Bear Anatomy "polarbear-world. Polarbear-world. No author No date of publication or last updated.
  6. .Polar Bear "Weebly" .Weebley. No date of Publication no author .
  7. .Polar Bear Predator "Polar Bear World" .Polar Bear World. No author No date.
  8. .Polar bear Habitat "WWF".WWF. last updated in 2016.
  9. .Habitat and Distribution"sea world" .Sea world. Last updated in 2017 no author.