A chronic disease persistent or recurring disease, usually affecting a person for three months or longer. It is generally one that is hereditary or one that is the result of factors such as poor diet and living conditions, using tobacco or other harmful substances, or a sedentary lifestyle.yme disease is an example of a chronic disease transmitted to human via deer ticks. Endometriosis is classified as a chronic disease. Using tobacco can increase a person's chances of developing a chronic disease.
The Missouri River is the longest river in the United States. It flows for 2,466 miles (3,968 kilometers). Its source lies in the Rocky Mountains of southwestern Montana; the river is formed by the confluence of the Jefferson, Madison, and Gallatin rivers at Three Forks, Montana.
This stretch of the Colorado River through Grand Canyon is spiced with 86 significant rapids, including Lava Falls, which rampages over garage-size boulders at more than 25 mph. Itâs reputed to be the fastest navigable whitewater in the Western Hemisphere.