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 polar bear's white fur helps camouflage it in its polar environment. The polar bear has two layers of fur, a soft under coat and an outer coat of guard hairs.The guard hairs are hollow and help the polar bear float! The polar bear has fur on the soles of its feet that helps protect it from the cold and ice and prevents the polar bear from sliding on the ice.The polar also has some webbing between its toes that help it paddle in the water.he polar bear has fur on the soles of its feet that helps protect it from the cold and ice and prevents the polar bear from sliding on the ice. The polar also has some webbing between its toes that help it paddle in the water.