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.
The necks of Polar Bears are longer than their nearest kin, the brown bear. This adaptation makes it easier for them to keep their heads above water when swimming, and, like others, enables the Polar Bear to live in the somewhat harsh Artic environment!The forepaws on a Polar Bear are very large.he necks of Polar Bears are longer than their nearest kin, the brown bear. This adaptation makes it easier for them to keep their heads above water when swimming, and, like others, enables the Polar Bear to live in the somewhat harsh Artic environment!