12 MEDICAL DEVICE REGULATIONS In Canada, devices of classes III and IV are subject to in-depth regulatory scrutiny,while class II devices require only the manufacturerâs declaration of device safety andeffectiveness before sale.
No problem: Polar bears in the study were seen swimming distances of 90 miles without any problems - and some bears went a lot further Scientists discovered that during the summer months, when sea ice is at its minimum, the bears were swimming farther and for longer periods of time than ever before in search of new hunting grounds.
Polar bears live across 1 million square miles of open tundra and sea ice encircling the North Pole. Their range spans the far northern reaches of Alaska, Canada, Russia, Greenland, and Norway. Polar bears are the largest member of the bear family. Adult males weigh up to 1,400 pounds and stand up to 11 feet tall on their hind legs.