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.
Polar bears are the largest of the three bears found in North America. They range from about seven hundred pounds up to about fifteen hundred pounds. Not only are they the largest bear found in North America they are also the most dangerous to humans.
Quick Answer. As 2013, the U.S. Census Bureau estimates that there are 242,470,820 adults living in the United States. The total population was estimated at 316,128,839 people, with 76.7 percent of those people being over 18. Continue Reading.