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- The polar bear hunting should be forbidden.
-Recycling is a good way to prevent the Global Warming to keep destroying the planet.
-Create special places, as protected areas for them to live in without danger.
-Concienciate the people about what is happening by the media. (TV, magazines)

As teenagers, we can´t do much, but the best way of helping, could be recycling in your own home. A small effort of each of us can do a great difference.

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The mother of all polar bears lived in the British Isles about 100,000 years ago and she was not white but brown, according to a genetic study of the Arctic's biggest land predator.

Scientists have traced the maternal ancestry of modern polar bears to a female brown bear that lived in the vicinity of Britain and Ireland prior to the peak of the last ice age when polar bears and brown bears probably interbred regularly.

The discovery is of more than academic interest because in recent years hybrids of brown bears and polar bears have been spotted in the Arctic region. Biologists said that hybrids may therefore be crucial to the long-term survival of polar bears at a time when the Arctic sea ice is undergoing rapid melting during the summer months.The scientists collected DNA samples from the mitochondria – structures within the cells – of bear fossils from around the world. This enabled them to trace the evolutionary history of the maternal line of the bears and match it to geographical movements over time, which led to the mother of all polar bears.

Modern polar bears are bigger than brown bears and are adapted to a cold climate and a predatory behaviour that relies on long bouts of swimming between the ice pack.

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WHAT CAN WE DO TO PREVENT THE EXTICTION OF THE POLAR BEARS

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WHAT CAN WE DO TO PREVENT THE EXTICTION OF THE POLAR BEARS

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The global warming is having a great impact in the extinction of polar bears. Global warming has put the Arctic sea ice in a precarious position, it is now vulnerable to atmospheric anomalies.  Polar bears are highly specialised mammals which rely heavily on sea ice for food and other aspects of their life cycle, and the global warming is decreasing a part of the sea ice. This affect polar bears in several ways:
-The early retreat of summer sea ice means that bears have less time to hunt and therefore less time to build up fat reserves.
-The fragmentation and reduction in sea ice forces the bears to swim longer distances, using up some of their fat reserves. It also reduces the number of seals, which are the bears’ main source of food and, in addition, forces the bears to spend more time on land, with increased interactions with humans potentially leading to higher mortality.

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Global warming melt the ice and the polars bears need cool environments to survive.
Oil spills pollute the water and since polar bears need water to survive they start to die because they cannot catch seals.
FACT: Surveys predict that in 2050, two-thirds of the population will die.

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1.    Population of walruses, seals, whales, reindeers, rodents and birds would increase.
2.     There will be too much vegetation in the Arctic Circle so herbivores would die or forcing to move habitats.
3.     In about 100 to 200 years the breathing holes, create by seals, will break up the ice and split the Arctic Circle.

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1.     Human interaction like the hunting of polar bears for food.

2.    The hunting of polar bears as a sport.

3.     Luxury reasons, such as using a polar bear´s fur for rugs, coats, and clothing.

4.     Failed hunts. Polar bears spend more than half of their time hunting down animals for food.

5.     The Arctic continues to heat up, due to climate change.
6. Waste thrown in the sea.

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The polar bears are in danger because, since they live in the Arctic, they live through harsh and very cold climates. Polar bears have thick fur, so they can get overheated.  In addition, fifty percent of polar bear cubs do not live through their first year.

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The polar bear or white bear (Ursus maritimus) is a specie of carnivorous mammal of the bear family, one of the largest terrestrial carnivores on Earth. It lives in the polar medium and icy areas of the northern hemisphere. This animals are in danger of extinction.