In The Labyrinthine Queen Elizabeth Islands Of Northern Canada Malcome Ramsay An

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Term Paper Title	In The Labyrinthine Queen Elizabeth Islands Of Northern Canada Malcome Ramsay An
# of Words	756
# of Pages (250 words per page double spaced)	3.02

          In the labyrinthine Queen Elizabeth Islands of northern Canada Malcome Ramsay and his colleagues try to find answers for much of what they still don't know about polar bears.
          The average size of a female polar bear is six-feet-eight inches, Weighs 368 pounds.  The average male is seven- and -a- half feet long, Weighs 796 pounds, some males can weigh twice as much.  Polar bears are often called the world's largest land carnivores.  Their heads are more than 16 inches long and nearly a foot across.  The paws are 8.5 inches wide, used for swimming and catching seals.  Eighteenth- century European scientists named them urus maritimus, meaning ''sea bear''.  They can swim 100 miles at a stretch.  Most females return to land to give birth.  The first bears go back almost 20 million years ago.  Then they were only the size of small dogs.  They began to grow much larger, some even larger than those do today.
          Since 1968 researchers have detected toxic contaminants in the tissues of polar bears, this is far more threatening to their survival then hunting.  They're finding organochlorines like PCBs, dioxins, and DDT in the bears' fat and milk.  They're coming from Asia, Europe, and North America.  They are passed up the food chain and concentrated in the bears' fat.  Malcom tested a dozen bears in April and then again in May, levels of DDT, PCBs, and chlordane had increased between 12 and 34 percent.
          During the summer when the ice melts, they can't hunt so they wander around. They're fasting sometimes called walking hibernation.  Many wined up at Churchill, the polar bear capitol of the world.  Sometimes they're put to death.  Most times they're put in a converted warehouse that can hold up to 23 polar bears.  They are kept there for a month and released north of town.
          Since the early 1980's the weight of adult female bears at Hudson Bay has declined, as has the survival rate of their cubs.  Ian Stirling, a veteran polar bear researcher with the service, believes it has something to do with climate change- including global warming.  Malcolm doesn't completely agree with him.  But he does agree that if globa...

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