Bipolar disorder is a chronic mental illness that causes dramatic shifts in a personâs mood, energy and ability to think clearly. People with bipolar have high and low moods, known as mania and depression, which differ from the typical ups and downs most people experience.
The American black bear is the most commonly seen bear in North America and it has the largest geographic range. Black bears can be found as far south as central Mexico and as far north as northern Alaska and most of Canada. In the United States black bears are common in the east, along the west coast, in the Rocky Mountains and parts of Alaska. They are also found in a few small areas in the southwest and southeast. Black bear are the most timid and least dangerous of the bears found in North America.
The grizzly bear is a sub-species of the brown bear, also known as the Silvertip Bear. The grizzly bears live in the uplands of western North America, and each female bear produces a litter of young roughly every other year.Grizzly bears can often be seen to congregate together around streams in the salmon season to get the best catch.he grizzly bears live in the uplands of western North America, and each female bear produces a litter of young roughly every other year.