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 the largest bear species. They can grow to 8-11 feet tall and about 8 feet long, and weigh about 500-1,700 pounds.They are easily-recognized due to their white coat and dark eyes and nose.ut the main reason they live in these cold areas is their prey. Polar bears feed on ice-loving species, such as seals (ringed and bearded seals are favorites), and sometimes walruses and whales. They stalk their prey by waiting patiently near holes in the ice.