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Reply #33: Why do polar bears need multi-year ice? People drive on single-year lake ice. [View All]

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FarCenter Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Nov-29-09 10:27 AM
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33. Why do polar bears need multi-year ice? People drive on single-year lake ice.
Single year ice is certainly thick enough to support the polar bears' weight without cracking. Yes, the single year ice may develop more cracks and open-water leads, but polar bears swim. I'd think that this makes it easier for them to catch seals.

Part of the problem in Hudson's Bay may be that it has not frozen over as early as it usually does. See http://nsidc.org/arcticseaicenews/
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