Where Do Polar Bears Live Analysis

Global warming is the recent and ongoing rise of temperature on a global scale. Over the past century, the Earth's average temperature has risen 1.4°F (Carlowicz, 2010). Global warming is the effect of an excessive amount of greenhouse gases in the atmosphere. Greenhouse gasses trap heat from escaping back into space to keep the Earth from freezing, this is called the Greenhouse Effect. An excessive amount of greenhouse gases in the atmosphere trap too much heat, thus, causing Earth's temperature to rise.

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This examination paper consists of two parts - Part A and Part B Part A consists of 20 multiple choice questions each worth one (1) mark. Answer all the questions in Part A on the answer sheet provided, using pencil only: (a) Print your student number, name and initials in the space provided and mark the appropriate boxes below your student number, name and initials. (b) For each question, mark the appropriate response (a), (b), (c), or (cl). There is only one correct response to each question in Part A.

"Polar Bears, Ringed Seals, and the Complex Consequences of Climate Change" is an article written by Mary Bates who earned her PhD studying Bat echolocation. She works for an American Association for the Advancement of Science. In this article Mary talks about how Climate change is impacting different species at different rates. Here, she focuses on sea-ice dependent animals such as Polar Bears and Ringed Seals at Arctic. She explains on how these animals are dependent upon the sea-ice for living. The Arctic is warming at a rate three times greater than the global average, and that the sea ice coverage is declining rapidly. She also talks about Hamilton's study on sea-ice dependent animals. Before the melting of sea ice the Polar bears used

Polar bears are one of the countless species who are endangered. They were one of the first animals affected by global warming and their population is heavily decreasing. Around 1980, the Arctic was as large as 8 million square kilometres. In 2011, studies show that the Arctic has reduced its size to 4.5 million square kilometers. In the future, will there be anything such as the Arctic? Scientist predict by 2040, only a fringe of ice will remain in Northeast Canada and Northern Greenland. This is known as the Last Ice Area. This matter is mostly taking part in Canada, since; Canada holds more than half the world’s polar bear population. Other affected countries include the U.S. (Alaska), Greenland,

Glacier retreat will greatly affect polar and aquatic ecosystems and animals. Most arctic life revolves around the sea and presence of sea ice. Without the presence of ice, most ecosystems will be recreated. Polar bears are one species in great danger. Polar bears use sea ice as a birthing and hunting ground, and also use it to travel from one place to another. As glaciers start to disappear, the mother polar bear has less access to food; therefore, the chance of survival for her and her young is very slim. The polar bears chance of reproduction becomes less as the glaciers retreat. As the top of the food chain, their decline will cause negative effects for each level below them (Review Diagram G). The only way for polar bears to survive, is by

With the ever rising global temperatures, melting ice caps, and constant warnings about global warming, it is no wonder that the animals inhabiting the artic regions around the world are now suffering a decline in their habitat as well as their livelihood. Such is the case with the Polar Bears who may soon be gone in a scant few years.

The polar bear, the largest land carnivore in North America, one of the largest animals in the world and a favorite at zoos worldwide, has, over the years, adapted to its harsh Arctic environment. The appropriately named ‘ursus maritimum’ or sea bear usually lives between 15 and 18 years in the wild and spends most of its life on ice. It is the most recent of the eight bear species. The first polar bear was a brown bear subspecies, with brown bear dimensions and brown bear teeth. The polar bear evolution was rapid due to the small population and extreme pressure to survive. Even today, the polar bear continues to evolve to better adapt to the harsh realities of Arctic life.

The polar bear lives up in the Arctic region where global warming and climate change are melting the ice caps that the bears thrive on. They use the ice as a platform from hunting and rest. The random pocket holes in the ice, where the seals pop up at, is where the polar bear catches its prey. With this reduction of ice, “the abundance of seals, and increases the amount of energy and time needed for hunting, leaving less energy for reproduction” (Endangered Species and Habitats).

Since polar bears are approaching human settlements, educating the humans about polar bears and of their behavior could reduce the amount of unnecessary killing (O’Neill, et al., 2008, p. 1657). Lastly, all experts recommended that polar bears should be monitored and research should be conducted on polar bear populations in hope to conserve the species from

Polar bears live in the circumpolar north in areas where they can hunt their primary prey ice seals. They are found in Canada (home to roughly 60% of the world's polar bears the U.S. Alaska Greenland Russia and Norway the Svalbard archipelago.

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.

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When you feel confident that you have mastered the material in this study unit, complete the following examination. Then submit only your answers to the school for grading, using one of the examination answer options described in your “Test Materials” envelope. Send your answers for this examination as soon as you complete it. Do not wait until another examination is ready. Questions 1–20: Select the one best answer to each question. 1. Which of the qualities required for a good