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.
As of July 4, 2014, the total population of the United States was at 318,881,992 people, as reported by the United States Census Bureau. The United States is the third most populous country in the world, with China leading at 1,361,512,535, and India coming in second place with 1,251,695,584 people.