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I'm on a course at the moment http://rockettube.fun/ rockettube.com In order to examine how sea ice might be affecting harp seal populations, the researchers compared images of winter ice from 1992 to 2010 in a major whelping region off Canada's east coast with yearly reports of dead harp seal strandings along the U.S. northeast coast that were grouped by gender and the estimated age of the seal. In the end, they found significant differences. In years when ice cover was reduced, strandings for younger seals rose sharply. Strandings for adult seals, in contrast, remained relatively stable.

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