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.
If the polar bear runs at a speed of about 29,880 m/s, how far will it travel in 10.0 hours? 2. Like the polar bear, the walrus is a fine swimmer, though it does not have the same endurance. For short periods of time, a walrus can swim with an average speed of 9.7 m/s.