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 far to the north in the freezing Arctic. They are well insulated from the cold with heavy fur and a thick layer of fat. The polar bear's white fur also acts as camouflage in the snow and icy Arctic terrain. Polar bears live on the ice in the winter and on land in the summer once the ice melts.Sometimes in the winter they may be over a 100 miles from shore.hey are well insulated from the cold with heavy fur and a thick layer of fat. The polar bear's white fur also acts as camouflage in the snow and icy Arctic terrain. Polar bears live on the ice in the winter and on land in the summer once the ice melts.