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 are one of the largest bear species (many sources say they are the largest). They can grow to 8-11 feet in height and about 8 feet in length. Polar bears weigh about 500-1,700 pounds, and they live the cold Arctic-in parts of Alaska, Canada, Denmark/Greenland, Norway and Russia. So, what do these large marine mammals eat?