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.
A polar bearâs eyesight and sense of smell must be strong. Reportedly, a polar bear can smell a seal up to 20 miles away! Their teeth are different from other bears because their diet is different. For example, brown bears mostly eat vegetation, while polar bears mostly eat other animals â primarily the ringed seal.