Polar Bears Dealing With Climate Change

Polar Bears Dealing With Climate Change
How are polar bears dealing with climate change? Let me tell you. Polar Bears food is diminishing, fast. According to National Geographic, the
population of polar bears has dropped 40 percent from 2001–2010. Here are strategies that polar bears have adapted too.
Putting Leftovers on Ice
Polar bears have been trapping food and eating it later, which is unusual for them. However, because food keeps declining, this won't last long.
Surf and Turf on the Menu
Polar bears rely on snow geese now as backup food. Their eggs are equivalent to eating one stick of butter. Additionally, seaweed, fish and whale
carcasses are on the menu, but unfortunately that is not enough for them. This "diet" is not enough for polar bears to survive as a whole.
Walking
... Get more on HelpWriting.net ...

Changes In Polar Bear Eating Habits
On the western shore of the Hudson Bay, biologists have been studying the drastic changed in polar bear diets and their new eating habits. Through
their studies of polar bear scat and video surveillance, the biologists have come to the conclusion that polar bears are beginning to adopt a new form
of food. They are beginning to eat from the abundant source of snow geese. The snow geese have been traveling farther north in the spring to nest in
the grassy, arctic marshes. Here they lay their eggs, vulnerable to predators such as the polar bear. Due to the global warming, the arctic ice has begun
to melt at a much faster pace. This means that polar bears have less time and less ice to hunt for seals. The polar bears have always relied on seals

Polar Bear Bones
Based on the jawbone's shape, scientists were confident that it belonged to an adult male polar bear. The rock layers in which it was embedded, along
with other dating techniques, suggest that it is 110,000 to 130,000 years old – older than any other known polar bear fossils. This date alone is
interesting because previous estimates for the origin of polar bears have ranged from 70,000 to more than a million years ago. But, based on the new
fossil's age, we can infer that the polar bear lineage must be more than 110,000 years old. The anatomy and rocks in which the jawbone was preserved
provided useful information – but the fossil had an even more powerful line of evidence: DNA.
DNA breaks down over time, but new techniques allow scientists

The Habits Of The Polar Bear
The polar bear is a large bear that lives in the north. They are the second largest bear in the bear family, and they have a unique white fur that
differentiates them from the rest of the bears. This white fur is not only their unique characteristic, but also an amazing tool that God has given them so
that they can survive in the wild. In order to better understand polar bear, one must understand their habits, their characteristics, and the dangers they
are facing.
First of all it's a question that everyone has, what do they eat? Their diet depends on high–fat content in seal fat, this is one of the few stuff that can
provide them enough calories to maintain their survival and to pass down their genes. They usually eat seals. Ringed seals are eaten by the females
and little ones, and the males hunt the bearded seals, which are bigger than the ringed seals. In the good times when they have access to much food,
they may eat only the bladder and the skin of the seal because that's the fattest part. However, when times are not that good, they will also eat other
stuff if it is available. They will hunt whales if they are trapped, they will also accept small animals and any carcass within their reach. Unlike some
bears, they don't have the habit of storing food. After they finish eating, they will leave the rest of the body for scavengers. Sometimes the scavengers
might be other polar bears that failed their hunt. It is also very common for them to share food. Once, a scientist

Polar Bear Research Paper
In recent years, society has been extremely innovative with its technology, thereby generating a mass increase in the efficiency of the commodities we
use in our daily lives, but also elevating the amount of pollution that's being released into our ozone. This, sequentially, is worsening the effects of the
polar bear's prime enemy: global warming. It is indisputable that the longevity of any animal's life should not be determined by the preference of a
human being; it is unjust for us as people of the earth to decide which animal is more deserving of our help. However, we must start somewhere.
According to endangeredpolarbear.com, "The CO2 (carbon dioxide) levels have never before, over the last ten thousand years has reached 300 parts per

Essay on Global Warming: Polar Bears are Endangered
Essay Title: Polar bears are endangered
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, ... Show more content on Helpwriting.net ...
At the present rate of global warming most of the frozen portions of the Arctic may disappear by the end of this century.
CONSEQUENCES OF THE ISSUE
There are so many consequences because of global warming and humans polluting. As a result of global warming, the polar bear habitat is getting
demolished. The warmer temperatures are melting the ice in the Arctic and North Pole. Polar bears are travelling miles and miles to find ice.
Polar bears live, eat, and raise their cubs on Arctic ice, which is breaking up and melting at an alarming rate. Year by year, this problem will get
worse and worse. Humans and factories throw away their waste in the ocean and it goes in the water the fish and animals drink. Polar bears eat
fish and they are affected by this polluted water as well. Hunters kill many animals including the polar bears and it's decreasing their population.
When polar bear population decreases, other animal populations will rise and the animal chain will change. We should not let global warming take
over our species and destroy the animal chain. Polar bears are one of the many animals affected and if there are too many animals affected, the whole
animal chain will fall apart. Research shows that, even if steps are taken to reduce emissions now, gases already in the atmosphere will continue to
heat up the earth for another 40 to 50 years. Scientific statistics indicate they may suffer extinction by year 2100. We still have many years to make a

Trends In Polar Bears
Trying to get an accurate trend in polar bears is difficult due to the geographical areas polar bears live and due to the fact that there are 5 countries
that have polar bears living in their boarders and not every country is dong scientific research on polar bear populations. The Russians, Norwegians
and Danes have never completed a full population inventory so it is impossible to know what is the current population and what the status of those
populations are. The 2008 COSEWIC Status Report says that polar bear populations have "increased over the past few decades" but is now declining.
Out of the subpopulations in Canada, 4 are declining, 7 are stable or increasing and for 2 a trend cannot be projected due a lack of information. The
PBSG

Essay about Polar Bears and their Retreating Habitat
Some of the risk factors that contribute to its registration on the Species At Risk Public Registry are hunting, reduction of availability of their prey, the
reduction of their melting sea ice, and pollution, but mainly human actions. Polar bears were hunted more commonly in the past, since they have been
considered at risk, they have been given regulations and laws to ensure their species survives, thus taking precautions such as putting a limit to hunting
and killing the bears, whether they bring a threat when entering a community or village. There are still procedures that the officials have to follow
before killing the bear, such procedures could include relocating the bear far away from the community. The... Show more content on Helpwriting.net ...
This then creates shorter life span for the polar bear species. The more that humans interact with the polar bears habitat and damage their own
surroundings affect the polar bears natural way of life, more at risk they are. By just the way humans burn so much fuel affects the polar bears from
miles away. The burning of fossil fuels is most of the cause to climate change, humans can affect them directly with weapons, entering their habitats,
and polluting their surroundings, or they can also affect the polar bears indirectly with the burning of greenhouse gases, polluting the waters, and
decreasing their habitat range. Another risk factor is climate change, changing temperatures and changing their habitat, polar bears are being forced on
to landmasses and entering into communities to obtain food for their survival. The polar bears are being seen more prominently in communities usually
trying to find food, because of the drastic changes in their habitat.
What did you learn about your species at Science North that you did not know before? Explain (A second visit may be helpful)
Science North provided me with a lot more than a few points, I learned that male polar bears are very aggressive and have been known to turn on their
own kind, usually eat polar bear cubs if they encounter them during

The Evolution Of Polar Bears
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 ofpolar bear and grizzly bears, and
this new specie is the result of a type of biology evolution. ... Show more content on Helpwriting.net ...
Obviously, no. According to scientist analysis, although male polar bears do not generally "creep into grizzly habitats", grizzly males "roam to
establish territory" and "come in contact with receptive female polar bears." Meanwhile, because of the global warming, the ice melts constantly.
Therefore, the amount of "pizziles" and grizzlies increase, and the number of pure polar bears declines. It means that polar bears are getting " the
short end of the stick in this relationship," and like Geoff York said, " not gaining any genetic diversity." Furthermore, except the melting of the ice,
global warming also boosts the range of activity of grizzly bears for crossbreeding with polar

The Nature Of The Polar Bear
The scientific name for the polar bear is Ursus maritimus. However, it has many other names as well, such as sea bear, ice bear, lord of the Arctic,
and old man in the fur cloak. Despite all the different names, one thing is for sure, the polar bear's body has been constructed perfectly to deal with the
seasonal shifts in the Arctic.
The fur of a polar bear acts as a dense insulator, preventing almost all heat loss. In fact, adult males can overheat from running. The fur is transparent
with a hollow core that scatters and reflects visible light, making it appear white, just like what happens with snow and ice. The skin of a polar bear is
black, and it covers up a layer of fat that can be up to 4.49 inches thick. This thick layer of fat helps keep the polar bear warm in the water, since wet
fur acts as a poor insulator. The polar bear's small round ears and short, compact tail also help conserve heat. Their large paws, approximately
11.81 inches across, are covered with papillae which help from slipping on ice. To complete the challenge of crossing thin ice, the polar bear extends
its legs far apart while lowering its body to distribute its weight evenly. This action helps it survive on its home range of sea ice, which can be quite
large, expanding far greater than any other species of bear.
A polar bear's home range depends on both habitat quality and prey availability. Polar bears mainly depend on seals for their high–fat content and can
eat 100 pounds of blubber

The Dangers Of The Polar Bear
The polar bear ia a large bear that lives in the north. They are the second largest bear in the bear family, and they ha a unique white fur that
differentiates them from the rest of the bears. This white fur is not only their unique characteristic, but also an amazing tool that God has given them so
that they can survive in the wild. In order to better understand polar bear, pwople must understand their habit, their characteristics, and the dangers they
are facing. First of all it's a question that everyone cares, what do they eat? Their diet is depend on high–fat content in the seal fat, this is one of the
few stuff that can provide them enough calary to maintain their survival and to pass down their specie. The types of seals that they eat are usually
seals. Ringed seals for the females and little ones, and for the males, they will hunt the bearded seals which are bigger than the ringed seals. In the
good times when they have access to a lot of food, they may only eat the bludder and the skin of the seal because that's the fattest part. However,
when the time is not that good, they will also eat other stuff if they are avaliable. They will hunt whales if they are trapped, they are also acceptable
with small animals and carcass within their reach. Unlike some bears, they don't have the habit of storging food. After they finished eating, they will
leave the rest of the body for scavengers. Sometimes the scavengers might be other polar bears that failed their hunt. And it

Global Warming On Polar Bears Research Paper
Brenda Ceja
Block G: Biology
May 24, 2015
The Effects of Global Warming on Polar Bears
Introduction
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 1.4В°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. The Earth's rise in temperature is melting ice in its colder regions. Many
animals who live in the Arctic Circle, the lands surrounding ... Show more content on Helpwriting.net ...
The melting sea ice is also affecting the polar bear's main prey, seals, forcing the bears to turn to alternate, less nutritious food sources. Once sea ice
forms in the winter, seals use the ice to create dens to give birth to their pups. In these months, polar bears use sea ice as their hunting grounds to
find seal dens. Now that Seasonal Ice is forming later and melting earlier (IPCC, 2013), seals have less time to build dens and give birth.
Consequently, polar bears have less time to hunt their preferred prey of seal pups. They must spend more time on land hunting other animals of less
nutritional value. Organizations like Sea World Parks have reported male polar bears occasionally eating newly–born polar bear cubs because they
cannot find other food to eat. Lack of nutritional food leads to a reduced body size. Polar bears are becoming thinner and weaker from not eating
enough (Rode, Amstrup, & Regehr 2010). They have to swim longer distances to find ice to hunt upon, causing many cubs to die because they are
not yet strong enough. In the Hudson Bay, the average polar bear weight has decreased by 15% and the population has decreased by 20% (National
Wildlife Federation). In the summer when there is no ice, polar bears in the Hudson Bay go onto land to fast until the ice reforms. Now that ice is

On Thin Ice: Polar Bears
On Thin Ice
Polar bears, while cute and adorable, serve a large purpose. Every single year their populations are dwindling. We must do all that we can to ensure
that they reach extinction. Losing these animals would make a large impact on our world that we cannot afford. Our world hangs in a balance that
would be disturbed if the polar bear went extinct.
There are nineteen subpopulations of polar bears. Eight of those populations are declining, and it it is estimated that many more will follow. There are
only 20,000–25,000 left in their natural habitats due to various factors.
One of these reasons is the climate change. Because of the increase in temperature, the arctic ice is shrinking. Greenhouse gases are the main
cause for the melting ice which is getting smaller about ten percent every decade. The lack of ice is causing many animals to lose valuable land.
Polar bears mainly live in Canada, but also live in Russia, Maritola, and Alaska. This land is melting and they are losing their habitats. While their
name, Ursus Maritimus, means sea bear, and they can swim about six miles per hour for up to sixty miles, they do need to rest. Polar bears rely on
ice caps to rest and to hunt on. Ice loss means longer distance they need to travel before resting and hunting. Ice is the primary way polar bears hunt,
using openings in the ice to hunt seal. They wait for seals to come up for breath, and then dinner is served. However, without ice their method is
useless. This causes

The Polar Bear : A Description Of The Polar Bear
Species History The first thought that pops up in someone's mind when asked to describe a polar bear is the white furred bear that lives on ice – or, in
the Arctic. This would not be an inaccurate description of the Ursus Maritimus as it is true, even the name itself translates to "maritime animal"
(Derocher et al. 2004). Polar bears "rely on sea ice" as it provides a platform for "hunting, migrating, and mating" without ice, they are forced to move
inland to where competition as top predator increases (Hamilton et al. 2014). They evolved from "terrestrial brown bears" to a highly "pagophilic"
animal (Derocher et al. 2004).
Current Range The current range of the polar bear is ice. This includes the Arctic basin/area, Alaska, parts of Canada, and Greenland. Their home
range can be enormous, as a fully grown polar bear can travel more than "1,000 kilometers to set up a home range apart from its mother's", but their
overall home range falls directly on two main factors: "habitat quality and availability of seal prey" (Polar Bears Habitat).
Food Needs With continued sea ice loss due to "climate warming", it will negatively affect polar bear survival and reproduction that will lead to
population declines (Hamilton et al. 2014). The ice that is able to survive the melt season, the insufficient snow cover "limit[s] its viability as habitat
for ringed seals", the preferred and primary prey species of polar bears (Hamilton et al. 2014). This has caused for the polar bear to

Polar Bears : Climate Change
Polar Bears rely upon sea ice for survival. They hunt on seals that are found on sea ice. Climate change and the atmospheric warming have caused the
Arctic ice to melt, resulting in loss of habitats for polar bears. This essay will focus on how has climate change and increase in temperature affected
the polar bears and what can we do about it.
INTRODUCTION
In everyday news, there is always that one article that talks about how climate changes are scary and how it is affecting all of us. Some of us read it
carefully and some of us just do not care. But it is a global issue that humans need to come together and think about. Throughout the history of human
evolution, many revolutions have occurred (e.g. industrial revolution). Inventions of complex technologies and industries have caused pollution
through the emissions of many greenhouse gases. One of the main climate change, increasing the temperature of the environment, is global warming.
An increasing greenhouse gas emissions, deforestation and rapid burning of fossil fuels are continually causing the warming of the climate. The
sunlight is the main source of energy on the planet but when greenhouse gases increase in the environment, it traps the heat radiating from earth toward
space, causing the global warming. This "greenhouse effect" not only affects the plants but also animals including humans. Polar bear is one of those
animal species that has been affected very much from this warming of the weather. Polar bears live

Polar Bear Arguments
The Ursus Maritimus, otherwise known as the polar bear, has walked this planet with their massive webbed paws for hundreds of years. They have
sustained many different difficulties in life but the most recent issue, global warming, is one that these animals just might not overcome on their own.
The polar bear's population is rapidly dwindling and scientists discuss why exactly we should save these giant white sea bears. There are two different
sides to this argument. One side is referred to as the Naturalists. These people believe we need to let nature take its course. They believe we should not
interfere, and instead let the animals and the ecosystem work on its own. On the other hand, the Anti–Naturalists believe we must step in and help
preserve the polar bear population. They believe that we cannot let the Ursus Maritimus die out for a various array of reasons.
The first reason for saving the polar bears given by the Anti–Naturalists is the effect on the food chain. In the artic, the polar bear is one of the few
creatures at the very top, it is a keystone species. Polar bear's diets consist mainly of one specific marine mammal, the seal. Without the polar bear the
entire population of the seal would rise significantly. With no predators to lower the population there would be a skyrocket amount of growth and a
very small amount of death. This means that the diet of the seal, which mainly consists of small fish and plankton, would also be affected negatively. A
large

Polar Bear Challenges
Polar bear is the largest land carnivore in the world, it is an animal native to the Arctic. They live without definite residence but migrate across the ice
and through the seas from Russia to Alaska, Canada to Greenland and onto the Svalbard archipelago. Adequate food and energy are the key for polar
bear to survival in the harsh arctic environment. In recent years, however, the polar bears have faced enormous challenges in arctic, where they have no
natural enemy. It is well known that the normal temperature of human body is around 36.5 degree centigrade, sometimes, sudden illness causes a rise
in body temperature. Every sudden increase in temperature of human body is a threat to human health. The same is happening with the global climate
system. On the surface, the temperature is just a fraction of degree centigrade but the air temperature can be changed very severe during a certain
period and it also causes a chain reaction of weather and climate. The Intergovernmental panel on Climate Change (IPCC) reports that since the
industrial revolution, the average temperatures of Earth surface has risen by 0.6 degree centigrade (Lisa V. Alexander). Moreover, the rise in
temperature is concentrated in recent decades, there has been an upward trend of about 0.2 degrees Celsius per decade. Global warming has already
affecting the Earth's ecosystems. The polar bear was the first species be listed as a threatened species in the US under the Endangered Species because
of the threats

Polar Bear Vs Polar Bears
Throughout many years, our Earth's climate has changed and fluctuated many times. As of today, our climate has been increasing dramatically. This
has to do with burning too many fossil fuels and creating more greenhouse gases, which make the Earth absorb more sunlight from the sun's rays.
Although this is hurting humans, no one has really thought about how it is affecting the arctic animals. It has affected polar bears and their way of life.
Climate change is also affecting lemmings, and the way they use the snow to survive. The Arctic Fox has a new competitor, the Red Fox. Climate
Change is affecting the biodiversity of animals and could cause a major extinction. Polar Bears have always relied on sea ice for their main
activities. They use the sea ice fro hunting, traveling, and for breeding. Scientists have found that sea ice has been melting earlier in the spring. They
have also found that the time it takes for ice to form again is also taking a longer time in the fall. The problem with this is that the Polar Bears spend
all their winter and spring on sea ice breeding and hunting. On the sea ice, polar bears hunt seals, in fact, that is what they mainly eat. When polar
Bears consume the seals,they provide the needed fats and nutrients needed for the harsh arctic environment. If the ice is melting faster, then that means
that seals won't rest on the sea ice and Polar Bears won't be able to hunt them.(NASA) In the Arctic, there is a continuous trend that seems to be

Our world's carbon emissions is one of the main leaders in animal extinction. Our carbon emissions are putting a numerous amount of animals at risk of
extinction. Such as, polar bears. Carbon is destroying their environment by heating up the earth's atmosphere. When the atmosphere is heating up, so
does the earth's insides, such as the earth's crust. As the crust is the outermost layer of the earth, it'll heat up and essentially heat our oceans. The Arctic
Ocean is heating up as well. The heating ocean is melting the ice caps. Coincidentally, that's exactly where polar bears live. As the ice caps are
melting, polar bears are left with immensely little space to live.
In addition, multiple people don't even know what is truly going on. No one

Surviving through harsh, –16В° celsius winters, Polar bears (Ursus Maritimus) have managed to survive the arctic's freezing conditions year after
year. Polar bears are only found in the northern hemisphere, and are an extremely evolved species that have very carefully adapted to the environment
(Moskowitz, 2010). They are fast enough to catch caribou, but spend most of their time prowling the ice at a more leisurely pace (Mertz, 2004). They
must walk slowly because they typically have problems with overheating rather than being cold ("Polar Bears 101."). This is due to their many
protective adaptations that allow them to thrive in the coldest of temperatures. Such adaptations include their white fur that allows them to stealthily
catch prey,... Show more content on Helpwriting.net ...
When brown bears went further north, the climate was drastically different, and they soon evolved to be polar bears. They adapted to these
changes relatively quickly because of the extreme conditions they faced (Pennisi, 2014). Fossil records indicate the closeness of brown bears, and
polar bears from an evolutionary and genetic standpoint (Mertz, 2004). In an experiment conducted where fossils of the two species were
compared, Irish Brown Bears and polar bears were shown to have many similarities; however, there were notable differences in skull shape, body
size, and teeth in addition to color (Pennisi, 2011). In another experiment conducted in the Alaskan ABC islands, through the comparison of DNA,
brown bears showed very clear genetic connections to polar bears, and it was theorized that the island bears were an offshoot of polar bears that
gradually evolved back into brown bears. They probably come from a polar bear population that was stranded due to the receding ice at the end of the
last glacial period (Cahill, 2013). This is due to the close genetic connections that polar bears and brown bears share, allowing them to interbreed and
evolve into either species depending on environmental changes. Brown bears and polar bears have often come together and then went their separate
paths as the global temperature fluctuated (Pennisi, 2011). This is not to say that polar bears are overly

Polar Bears And Polar Bear
Polar Bear
Introduction
Polar bears live in the Arctic Circle with temperatures that can be minus fifty degrees Celsius. Polar bears are considered marine mammals because
they spend the majority of the life at sea, swimming for miles, but they are the only marine mammal that has limbs and also roams on ice and land.
Male polar bears generally are twice the size of females, or sow's. An ancestor of the grizzly bear, polar bears live in theArctic Circle and spend
majority of their time in the ocean hunting for seals. Seals being the meal of choice for polar bears they have adapted to the harsh climate and learned
how to hunt seals (Willmer, 2004). The population size of polar bears is uncertain but Canada is responsible for two ... Show more content on
Helpwriting.net ...
Along with being translucent the bears fur is also hollow, this helps the bear swim, also preventing the freezing water from touching the bears skin.
The bears fur is also long, fine and densely packed insulating the bear further (Willmer, 2004). Thepolar bear have large feet and the soles are covered
in fur, insulating the feet and also used as grip for walking on the ice and snow. The large feet surface area on their feet also serves as grip for walking
long distances searching for food. They also have small ears which decrease risk of water getting in them. The small ears also reduce heat loss.
Diet
Polar bears are the most carnivorous of the bear family. Polar bears have large narrow heads allowing them to fit there heard in small spaces
searching for food. They have a great sense of smell allowing them to sniff out predators form far away. They have the most sensitive nose of any
mammal this allows them to smell a seal that is three feet under the snow, or thirty kilometers away. When they do find a seal den they jump and
push all their body weight into the snow breakings free the seal from underneath the ice. This hunting tactic mastered by polar bears acts as a surprise
attack, and the seal never knew what was coming. These bears incredible sense of smell allows them to pin point the exact spot where the seal's den is
under the ice, otherwise if the polar bear is wrong the hunt will not be successful. This method is so important because the

What Will Be The Polar Bear?
Introduction
What will be the fate of the polar bear? The polar bear is an important keystone predator in the Arctic and as such, their presence is crucial for
controlling seal populations as well as offering a food source for other animals, like foxes.(Gunderson, 2009) This paper was done to offer some
insight on the more current research done regarding the status and biology of polar bears as well as some basic information about them.
Naming
The polar bear is classified under the kingdom: Animalia, Phylum: Chordata, Subphylum: Vertebra, Class: Mammalia, Order: Carnivora, Family:
Ursidae, Genus and species: Ursus maritimus. (Gunderson, 2009) Polar bears go by several names depending on where they 're seen. Some include
the sea bear, Nanuk, ice bear, Isbjorn, white bear, Beliy medved, Lord of the Arctic and the old man in the fur cloak. (Polar Bear Facts and
Information) The first person to name polar bears was Commander C.J. Phipps, an officer in the British Navy who penned the name in 1774. (Polar
Bear Facts and Information, 2014) The polar bear is considered a marine mammal but they are not aquatic.
Population Distribution
Polar bears can be found in several continents including North America, Europe and Asia and Russia.(BBC, 2014) They live in the circumpolar areas
in the north, mostly in Canada where about 60% of polar bears are found.(Polar Bear Facts and Information, 2014) Their limits depend largely on the
placement and presence of the Arctic ice. Polar bears have

Polar Bear Environmental Impact
Throughout history, humans have modified their environment to suit their needs, such as housing, agriculture, and industry, but we are now seeing
major changes to the environment on a scale not witnessed before. The greenhouse effect has run rampant through man's use of fossil fuels and is
causing major changes to the planet, many unseen by people not directly affected. Human overuse of dirty energies that produce CO2 has led to
shrinking Arctic ice and warmer temperatures that cause disruption for the animals and people who live there. Glaciers, in places such as Iceland and
Canada, and the Arctic ice sheet are melting, breeding seasons are changing, and people and animals are being displaced (Greene et. al., 2008). Some
changes have been... Show more content on Helpwriting.net ...
The frequency of long distance swims in the polar bear population is increasing, beginning in late spring as the sea ice starts melting, when the bears
migrate from the sea ice to land or offshore pack ice (Pilfold et. al. 2017). Warmer temperatures are causing ice to become much thinner and more
mobile. "Instead of walking on a consolidated sea ice surface, polar bears may be forced to undertake long distance swims to complete their
migratory route (Pilfold et. al. :190, 2017)." Since polar bears are not pack animals, the effects of climate change on migratory behavior can vary
greatly between individual, and, therefore, this study compares male and female adults and male and female subadults. Subadults of both sexes
swam as much as an adult female did, but adult females with cubs were less likely to swim than the other age classes (Pilfold et. al. 2017). The
swims are also made in correlation to the ice; there is a positive relation in the distance of the ice from land and the rate in which it retreated with the
frequency of swims. Most swims were made before the ice had reached its minimum, and when it expands again, the bears track its movement toward
the continental shelf (Pilfold et. al.

Climate change has recently become a very large issue and at the forefront of it all are the Artic Polar Bears. These Artic Polar Bears have been
labeled as vulnerable by National Geographic. This vulnerable label comes from a multitude of issues with the most significant being climate change.
Artic Polar Bears are dying rapidly because these large carnivores are victims of the climate change, oil exploration, toxic pollution, and overhunting,
all these and many more reasons are leading them to extinction and something needs to be done about 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. ... Show more content on Helpwriting.net ...
Oil and gas business is moving towards the north because the wells in the southern areas are drying up. When the polar bears fur comes in contact
with oil spills it can reduce the insulating effect of the bears' fur" (WWF Global, 2016). This causes the polar bear to use more energy when trying to
stay warm without the usual insulation that it usually has. Poisoning is also a cause because if polar bears ingest oil it can be detrimental to their
health. They can "ingest oil through grooming and through eating contaminated prey" (WWF Global, 2016). Disturbances such as "seismic
blasting, construction, transportation and operation of oil facilities can negatively affect polar bears" (WWF Global, 2016). Lastly, creating drilling
sites in the northern parts of the world are destroying the polar bears habitat. For example, when if an oil spill occurs near a large amount of polar
bears then it can have an effect on the environment by possibly contaminating the area. People may suggest to drill offshore instead of inland but that
also poses a greater threat "since routine emissions, spills or leaks will be discharged directly into the sea or on sea ice" (WWF Global,

Female Polar Bears
Polar bears are a unique animal all their own. Male polar bears have a versatile diet and foraging strategy compared to female polar bears, which is
proving helpful with recent climate changes. Throughout this paper, the foraging techniques of male and female polar bears will be discussed along
with increasing climate temperatures and how it is affecting polar bears. Male polar bears are more versatile when foraging for food compared to
female polar bears. Thiemann et al. (2011) found that males would have a wider range in food selection due to the size of the adult male polar bears
giving it a greater opportunity to hunt larger animals. Therefore the males could better forage because of more options available to them. Thiemann et
al. (2011) ... Show more content on Helpwriting.net ...
Since the ice is slowly breaking away, it is causing a negative effect for polar bears and their foraging ability by not allowing an area for hunting of
ringed seals (Elvin, 2014). Rockwell and Gormezano (2009) talk about how the breaking apart of the ice disrupts the amount of time the polar
bears have for hunting seals which in return is causing the polar bears to travel to land sooner. Rockwell and Gormezano (2009) state that as the
polar bears are coming to shore sooner, they are interfering with the hatching season of snow geese. Due to the polar bears intruding on the nests,
this gives the polar bears the opportunity to consume the offspring of the snow geese and obtain any energy still required (Rockwell and
Gormezano, 2009). Even though the polar bears may not get the energy they need from seals, they are still able to get it by other means because of
the climate changing. Overall, male and female polar bears have their own ways of hunting and foraging. Although the females have their physical
limitations due to size or their cubs, they still find a way to survive like the males do by feeding off carcasses and hunting. Climate change is the
other limiting factor that is changing the way polar bears forage, but is also providing new ways as well through nesting grounds. As the world keeps
changing, the polar bears are changing as well to adapt and survive the best way

Persuasive Essay On Polar Bears
As the days go by, the weather gets warmer and the entire world population is affected in one way or another. Global warming has long been an issue
scientists have been trying to raise awareness of. Not only does it bring rising average temperatures, but it has an immense impact on the largest marine
mammal, the polar bear. The rising temperatures has caused polar bears to lose habitat and are forcing them to move downward to search for
alternative food sources. As a result, polar bears will become extinct because of their hunting habits, their meat based diet, and competition with the
grizzly bear. The polar bear is in danger of becoming extinct largely due to to the fact that the warm weather is giving them an insufficient amount of
time to hunt. According to the article 'Polar Bear", "Polar bears can only survive in areas where the oceans freeze, allowing them to hunt seals living
under, on, or in the frozen polar ice cap." This means, that with the rising temperatures and melting ice caps, polar bears ... Show more content on
Helpwriting.net ...
They argue that polar bears will survive or evolve. An argument is that their only predator is man, however, they will come into competition with the
grizzly bear and not be able to survive. Another counter claim is that the polar bears will evolve and adapt to their environments. Regardless of this,
UCLA Biologists say, "To people who say polar bears can just change their diet, we are saying they WILL change their diet–– they will have to –– but
it probably won't be sufficient for them." Even if the polar bear evolves to fit their environment, it will not be adequate, especially with their
competition with the grizzlies. Additionally, others say we can stop their extinction by human preservation, but that would still require them to get used
to a new environment. Taking all sides into consideration, the polar bear is more likely to become extinct than to evolve or

Polar Bears : Ecological Impacts And Conservation Efforts
Polar Bears: Ecological Impacts and Conservation Efforts
by
Samantha Isola
A REPORT SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR ADVANCED SCIENTIFIC RESEARCH IV
at
ISLANDS HIGH SCHOOL
Savannah–Chatham County Public School System
Advisors: Megan Heberle, Eric Lind
Spring 2016
Introduction
The polar bear is the largest carnivorous bear. They spend much of their time on the Arctic sea ice making the polar bear considered to be a marine
mammal (National Geographic, 2016). The polar bears body characteristics are adapted for the cold. Their fur is thicker than other species of bear
and the fur covers around their paws to keep traction on the sea ice (Polar Bears International, 2016). A thick layer of blubber beneath their fur
provides buoyancy and insulation for the extremely cold conditions (National Geographic, 2016). The polar bears average lifespan in the wild is
twenty to twenty–five years. The male polar bears weight varies from 550 to 1,320 pounds while the female polar bears weight averages from 200 to
700 pounds. From nose to tail a male polar bear is eight to nine feet long while a female is six to seven feet long (Defenders of Wildlife, 2016). Polar
bears are highly dependent on the condition of the ice region (Stirling et al. 1999).
Polar bears are solitary as adults except when they are breeding, raising cubs, or get attracted to a food source such as a beached whale (Polar Bears
International, 2016). Polar bears spend basically all

Polar Bears
SKIN AND FUR
Cut off and forced to adapt Population of Bears went away from the rest of the species. Because of rivalry for food?? Imprisoned by glaciers and
became separated in Arctic. Lots died from the unforgiving/ harsh environment, but those with evolutionary advantage( IE ideal fur colour) stayed alive
and reproduced 'cause paler bears had better advantage owing to the white hue of the habitat, whereas darker fur bears had harder times blending into
the frequently icy habitat while hunting. From then, paler bears appeared more often in new generation as mutations & genes continuously happen in
meiotic replication, so new alleles for genes occur in the population– ie new alleles for lighter fur colour and hollow insulating shafts were ... Show
more content on Helpwriting.net ...
APOB works by extracting the fat from the blood cells and transferring it into the fat cells. In other species the fats remain in the blood stream and are
deposited as atherosclerotic plaques in the lumen of the coronary arteries, causing cardiovascular disease and heart attacks.
COMPARATIVE ANATOMY:
The study of differences and similarities between the anatomy of living things.
This Image assesses the skeletons of human, cat whale & bat, demonstrating how alike they are although these animals have very different lifestyles in
very dissimilar environments. All these limbs are made of the same key parts; but, they perform totally different functions. Justification for
resemblances like these: the Different species evolved from shared ancestors.
.
Verifies evolution cause there are fossil records that demonstrate alteration of the anatomy of particular living organisms...shows that different
organisms have a common ancestor...Validates Darwins theory of

Polar Bears Biome
In Antarctica
Polar bears are found across the Arctic. They are most abundant in areas with annual sea ice and productive ringed seal populations. There are five
nations with polar bears: U.S. Alaska Canada, Russia, Greenland Kingdom of Denmark and Norway Svalbard. Polar bears do not live in Antarctica.
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.
Polar Bears Biome
The polar bears biome is the arctic tundra it look's like it's an owl but it's not i think The polar bear receives the most attention of all these animals, and
it's easy to see why.

Polar Bears Research Paper
Summary Polar bears are an important arctic species that are in danger of extinction because of climate change. Polar bears are known as a keystone
species, meaning they have significant effect on the environment in which they live. As such, keeping polar bears alive is essential for a balanced
ecosystem in the Arctic Circle. One of the major threats to polar bears is melting sea ice. As the overall temperature of the earth increases due to
global warming and the greenhouse effect, the sea ice that polar bears live on for most of their lives is melting. Polar bears require sea ice to survive,
as it is their hunting grounds and habitat. When the ice melts, polar bears are forced to move closer to the pole. Unfortunately, polar bears use northern
... Show more content on Helpwriting.net ...
The first recommendation was to practice "sustainable harvesting" on polar bears. Polar bears are hunted for food, for their fur, for sport, and for
traditional practices by Native people. According to Dr. Steven C. Amstrup, a chief scientist at Polar Bears International and a USGS polar bear
project leader in Alaska, he states that each native village is allowed to hunt a certain number of polar bears which is governed by a quota system
(Amstrup, n.d.). Polar bear hunting is currently managed in Greenland, Alaska, and Canada (Sahanatien, et al., 2012, p. 398). Another recommendation
was to educate the natives on polar bears. 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

Impact Of Global Warming On Polar Bears
Global warming threatens polar bears survive
Polar bear but the former "Arctic hegemony", but now the situation report risk: drowning, cannibalism, and human fought ""
The root causes of this series of bizarre events are due to global warming.
Bear War spate
In 2004, US scientists in Beaufort Bay found four drowned polar bears as "super swimmer"
And all day on pack ice from the shuttle Walker, drowning event was incomprehensible. In the same year, it took place inpolar bear territory
Bizarre murder, people found the bodies of two small polar bear in a cave collapse, even outside the cave animals
Continued heavy blow traces of the cave at the top, not far away, there is an incomplete mother bear's body. This "vicious" event exactly
By whomever? ... Show more content on Helpwriting.net ...
In lactation, female polar bears
Consume large amounts of fat stored in the body, on the one hand to make it into the milk for feeding calves, on the other hand to maintain their
Body temperature, so a female polar bear over the winter after the body weight can reduce by half. For these reasons, the polar bear fertility
It fell by 15%. Melting sea ice, polar bears will one day trapped in the sea, so that they can not return to their own land to construction
Nest. Scientists predict that by 2050, the number of polar bears will be reduced by 30%. Only the northern Canadian Arctic
Greenland and the West Bank to be able to make the world's about more than 10,000 polar bears continue to survive.
More intense greenhouse effect on the Arctic
The greenhouse effect caused by global warming, we are perceived more as a "winter is not cold, not hot in summer," why was it
Let the polar bear cold and hunger, homelessness, on the verge of extinction? Why is the strongest response to global warming is the place chosen to
Arctic
The ice and snow of the place? Arctic ice cap has two categories: one is the sea ice cover in the Arctic Ocean, one is

Polar Bears Research Paper
Polar Bears
The polar bear waits patiently at the breathing hole, waiting for its prey. Seals are just one of the many things polar bears eat, from fish to seals, to
beached whales. Polar bears are predators of sheer size and power.
One way that also helps polar bears hunt is their appearance. When hunting for anything other than a seal, the bear will use its white coat to get closer
to the prey. Polar bears have huge claws and strong jaws with one pointed row of teeth. Polar bears also have small hairs on the bottom of their feet
so they can have more friction on ice. The few things we can see on a polar bear that is not white are their eyes, nose, claws, and, paws. As you can
see, the appearance of a polar bear helps them survive.
Another

Polar Bears In Canada
Canada is home to many species of rich heritage, cultural significance and meaning to the Canadian people. Of the many species, one holds a strong
iconic significance that plays a vital role in the very ecosystem it resides in. The polar bear species are undoubtedly the apex predator of its food chain
and a culturally significant species to the indigenous people. With both these traits, it makes the polar bear a true Canadian symbol which is further
emphasized by its very place on the Canadian two–dollar coin to the strength and endurance represented by this majestic species. However, no matter
how strong and enduring the polar bears are to the arctic, such resilience is not as effective against the harsh changes their environment has gone
through. ... Show more content on Helpwriting.net ...
With their habitat being wiped away, their own food sources being toxic, to the very environment harboring chemicals; they are truly struggling to
survive. Furthermore, hunting, although not a threat on its own, poses a great deal of risk to this species because of the threats outlined previously.
If it were not for the disadvantageous situation the species currently face, it would likely not pose a threat at all. The aim of this paper is to provide
an overview of the threats faced by polar bears in Canada such as global warming, bioaccumulation of mercury, biomagnification of polychlorinated
biphenyls and hunting. Furthermore, hunting quotas placed on northern Indigenous populations will be analyzed as a conservation method that is
helping to reduce further strain on the existing populations of this Canadian

Polar Bears Will Be Gone
Our White Ice–Loving Friends are Disappearing The concerns about the ever rising sea levels, melting ice caps, and constant warnings about
global warming making their way into everyday news and our lives, it is no surprise that bears inhabiting the arctic regions are now suffering as a
result. The extent of the damage done to the Polar Bears may mean they'll soon be gone in a scant few years. In the Blink of an Eye, the Polar Bears
Will Be Gone No one wants to see our white furry friends go. That's why the USFWS has responded to the declining population of the polar bears by
drafting up a conservation plan to save them, or at least minimize their losses. The draft of the conservation effort can be found here on which it lists
that number

When people discuss climate change and pollution in the world, one species they typically look at is the polar bears. It has become a common quote
of people to claim, "The polar bears are dying," as they pick a side on the issue of climate change. For the most part, people love polar bears and use it
as inspiration to heed the Earth environment. Still, reports have shown that these beloved animals are suffering and need our help. Polar bears, also
known as currently have a vulnerable status, as their population dwindles with the change in their habitat. Their scientific name, Ursus maritimus,
literally means sea bear and encompasses their livelihood. People have called these bears many different names, including ice bear, white bear, lord of
... Show more content on Helpwriting.net ...
Although polar bears are known for their white fur, they actually have black skin under this translucent, hollow hair. Their translucent hair is able
to reflect light, while the hollowness works as an insulation and helps with buoyancy in water. Their fur covers a thick layer of fat that aids
warmth. Polar bears also have furry hind feet that give traction and warmth to bears as they move across the ice. These adapted feet combine with
webbed paws and dense bone legs that enable them to swim long distances. Smaller ears and tails can also be found in these mammals, in order to
minimize the amount of heat loss from these structures. Their long, narrow skulls warms the air they inhale and helps them capture prey in the
toughest of spots, a major difference from other bears. Polar bears use their massive jaws to grab onto prey and to find their meals wherever. They
have also shown to migrate in order to survive the summer, as they will follow the pack ice as it drifts north or even go ashore. Overall, polar bears
have evolved and developed important adaptations that have bolstered them to be able to overcome their harsh environment. Their descent with
modification has helped them succeed, yet it has not been enough to help them overcome current human and climate change conditions weighing down
on

Speech On Polar Bear
Land without ice is a very difficult environment for polar bears. This was proven by Canadian photographer Paul Nicklen and Sea Legacy filmmakers
when they arrived on Baffin Island in late summer. They came face to face with a shocking sight – a polar bear, starved and slowly dying.
"We stood there crying–filming with tears rolling down our cheeks," said Nicklen.
In the video, the polar bear was limping and hanging by a thread of life. The animal had a thin and bony frame, covered with white fur, while its back
legs were likely suffering from muscle atrophy due to wasting. It rummaged a nearby trashcan used by Inuit fishers seasonally, however, nothing was
edible. The polar bear dejectedly collapsed on the ground, deprived of food.
Nicklen thought of helping the bear but without a tranquilizer gun or 400 pounds of seal meat, he could do nothing. Also, feeding polar bears in
Canada is illegal. Nicklen also considered not to prolong the agony of the poor animal, instead, he recorded the bear's slow death from starvation.
"When scientists say bears are going extinct, I want people to realize what it looks like. Bears are going to starve to death. This is what a starving bear
looks like," Nicklen stressed out.
The heartbreaking sight of the starving and dying polar beat was a sign on how deadly climate change to mankind and animals. According to climate
scientists, the Arctic region is melting way too fast than at any time in the last 1,500 years. Some parts of the region

Polar Bears : Saved Species
Polar bears are not just the face of Coca Cola but they are the largest living land carnivores. Polar bears live in the Arctic, they live in low temperature
and where high ice content is present. Polar bears are built to survive in those habitat they have webbed paws that help them swim, strong teeth, and a
thick fur coat to keep them warm (defender.org). Polar bears are considered endangered–species, there current conservation status is vulnerable the
polar bear population is decreasing. Polar bears are shockingly every important the food web. Polar bears feed primarily on the fat of ice–dependent
seals. The remains of these seals provide food for many other Arctic species, giving polar bears a vital role in their ecosystem (defenders.org).
According to Steven Cenname the ecosystem relies on all its sections, if it were to lose section it would offset the ecosystem (???). Polar bears
present no danger to the human species, they do not cause any dangerous diseases. Why is the polar bear population decreasing? Polar bears are
endangered due to the dramatic climatic change that has been wiping out the polar bear population. The dramatic climatic change is being caused by
air pollution from production, cars, and any smoke in general. Due to ongoing and potential loss of polar bears losing their sea ice habitat resulting
from climate change, polar bears are listed as a threatened species in the US under the Endangered Species Act in May 2008 (worldwildlife.org). All of
which

Polar Bears Paragraph
Rielly Salazar
Writing–9
December 19, 2017
7 interesting fact about polar bears
Introduction Paragraph...
Is a polar bear one of the eight species? A polar bear is a one of the eight species. Scientists believe that the polar bear began over 200,000 years ago.
They came from the brown bears ancestors. Most experts think that polar bears are the longest bears. Males measure over 10 feet long, when standing
on their hind legs, other bear not so much. Brown bears and polar bear are the largest and are both land carnivores. Polar bears are one of the worlds
largest world predictors.
2.) Polar bears don't hibernate! Polar bears don't hibernate, expect if it is a pregnant female that hibernates over–winter in dens. Unlike other bears like
brown, black, grizzle, polar bears don't hibernate. Others may just dig a hole and spend several days in the hole, at a time. When the pregnant
female's activity level decreases, she gives birth and nurses her cubs. When the weather conditions are rough, they might stay in longer. Polar
bears are evolved to live in cold climates unlike brown bears 3.) Is a Polar Bear's fur really white? A polar bears fur isn't white, it just looks white.
There fur is actually clear, hollow tubes filled with air. "An outer coat of long guard hair that sticks together when wet protects a dense, thick under
coat." When a polar bear rolls, water rolls off of the guards hairs. "Scarring or residue on the fur can cause the "white" fur to appear

Polar Bears: Species Of Special Concern
Polar bears in the artic have been a topic of conversation and an area of concern amongst the media, the government and the Inuit people. The
effects of climate change are being witnessed within the artic bodies of water. Ice in the artic is beginning to melt which is resulting in a loss of sea
ice habitat. As a result polar bears have been listed as a 'Species of Special Concern'. Though polar bears have been placed on this list by the
government, the Inuit who have social, cultural and economic significance to this species do not believe in supporting this listing. With many
stakeholders involved, each investor has taken a specific stance to what they see to be the utmost benefit to the environment, the species of concern,
and what they ... Show more content on Helpwriting.net ...
The Nunavut Land Claims Agreement is in place so the Inuit people are entitled to their land, and are considered in decisions that occur within the
artic. The Inuit hold social and cultural value towards the polar bears and not just economic. The recent appointment is evident of the self–interest the
government has. It is evidence of the lack of trust the government has of the Inuit people, as they do not see the listing necessary but the government
sees otherwise. With the Nunavut Tunngavik Incorporated they have concluded that polar bears have been able to adapt to the climate changes
occurring globally. In reconsidering the status, employment and exploration opportunity could arise for those within the artic. This could create a more
prosperous economy and provide further development in the artic. Though polar bears should be protected, they do not need to be considered a
'Species of Special Concern' according to the Inuit in the artic, whom opinions should be valued and

Polar Bears Dealing With Climate Change

Recommended

Recommended

More Related Content

More from Michelle Johnson

More from Michelle Johnson (20)

Recently uploaded

Recently uploaded (20)

Polar Bears Dealing With Climate Change