Article: Arctic food chain.(GEO SKILLS)(Polar bears )

Article: Melting Artic ice threatens polar bear's survival: should ...
Oceanus;  April 1, 2008 ;     700+ words ... ... collected information about polar bears' mortality rates, birth rates ... is a critical component of the polar bears' environment," Caswell said ... other predators at the top of the food chain, polar bears have a low reproductive rate ...

Article: Polar bears a drift: policy decisions put them on ...
Science & Spirit;  March 1, 2008 ;     700+ words ... ... their icy perch, polar bears flourish at the top of an ecological food chain. Without the ice ... 000 to 25,000 polar bears, and according to ... down the ecological food chain with polar bears at the top. To thrive ...

Article: Polar Bears Adrift: policy decisions put them on ...
Current;  March 1, 2008 ;     700+ words ... ... their icy perch, polar bears flourish at the top of an ecological food chain. Without the ice ... 000 to 25,000 polar bears, and according to ... down the ecological food chain with polar bears at the top. To thrive ...

Article: Polar bears on borrowed time.(Europe)(Brief ...
Earth Island Journal;  January 1, 2005 ;     686 words ... ... equal numbers of people and polar bears. However, experts foal that ... reproduce. Topping the Arctic food chain, polar bears stole nutrients and poisons ... warming is also imperiling the polar bears, as their hunting ground melts ...

Article: Group will sue EPA over pesticides in polar bears
AP Online;  July 8, 2009 ;     700+ words ... ... that end up in food eaten by polar bears. The Center for Biological Diversity ... the effects of pesticides on polar bears, a threatened species, and ... People share the top spot in the food chain with polar bears," she said. "Unfortunately ...

Article: Toxins threaten future of polar bears and the Inuit
The Independent - London;  October 2, 2002 ;     700+ words ...POLAR BEARS, Arctic foxes ... build up in the food chain, new research ... build up in the food chain, especially ... the diet for polar bears and the indigenous ... top of the food chain are hit hardest ... and those are polar bears and humans ...

Article: Polar bears are hit by gender-bender poison.
The Daily Mail (London, England);  October 2, 2002 ;     499 words ...POLAR bears have been found that ... manmade toxins in the food chain. The toxins follow ... part of the diet of polar bears and the Inuit, the ... at the top of the food chain are hit hardest, and those are polar bears and humans,' explained ...