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Date : 2009-11-17
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On Thin Ice The Changing World of the Polar Bear Richard ~ As climate change continues to shrink Arctic winter ice fields the polar bear faces extinction possibly by the end of the century a stark reality wrought vivid by prolific science writer Ellis Tuna in this wellsourced geographical historical cultural political and environmental overview One of the largest land predators in the world the great white bear—hunted almost to the brink of extinction decades ago and after a population rebound reduced again to an estimated 22000—has
On Thin Ice The Changing World of the Polar Bear by ~ As climate change continues to shrink Arctic winter ice fields the polar bear faces extinction possibly by the end of the century a stark reality wrought vivid by prolific science writer Ellis Tuna in this wellsourced geographical historical cultural political and environmental overview
On Thin Ice The Changing World of the Polar Bear by ~ ”On Thin Ice The Changing World of the Polar Bear” by Richard Ellis published by Alfred A Knopf Category – Nature – Global WarmingPolar Bear Publication Date – November 17 2009 I know this came out in 2009 but it may even be more important in 2019
On Thin Ice The Changing World of the Polar Bear ~ In “On Thin Ice” you note that polar bears are the most heavily contaminated animals on earth Why It’s because we are producing vast amounts of heavy metals PCBs and mercury to name just a few chemical contaminants much of which wafts up to the Arctic lands on the snow and water and is then absorbed by bacteria and ingested by the smallest animals in the food chain
On Thin Ice The Changing World of the Polar Bear by ~ Today as global warming threatens the ice caps’ integrity the polar bear has also come to symbolize the peril that faces all life on earth as a result of harmful human practices Here
On thin ice the changing world of the polar bear ~ But as the ice melts in the Arctic the ability of polar bears to find food diminishes in spite of their incredible physical capacities Some bears will vainly take to the water in search of ice on which to hunt and many of them swim until they drown In the past twenty years alone the world population of polar bears has shrunk by half
Polar Bears and Climate Change Pages WWF ~ However their dependence on sea ice makes them highly vulnerable to a changing climate Polar bears rely heavily on the sea ice environment for traveling hunting mating resting and in some areas maternal dens In particular they depend heavily on sea icedependent prey such as ringed and bearded seals
Polar Bears Are Starving Because of Global Warming ~ Amstrup’s own 2010 study projected that continued decline in sea ice would reduce the global population of bears by two thirds to less than 10000 by 2050 Best estimates say there are 20000 to 30000 polar bears in 19 different groups or populations scattered across the top of the Canada Greenland
10 Facts About Arctic Sea Ice Polar Bears International ~ Polar bears rely on sea ice to efficiently catch their seal prey The polar bears main prey the ringed seal relies on sea ice too—for giving birth to and raising their pups Arctic sea ice is important to people living in the North and to our global climate
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