Death due to disease is called death by natural causes. There are four main types of disease: pathogenic disease, deficiency disease, hereditary disease, and physiological disease. Diseases can also be classified as communicable and non-communicable disease.
A watershed is the area of land where all of the water that falls in it and drains off of it goes to a common outlet.
A watershed is the area of land where all of the water that falls in it and drains off of it goes to a common outlet.Watersheds can be as small as a footprint or large enough to encompass all the land that drains water into rivers that drain into Chesapeake Bay, where it enters the Atlantic Ocean.ot all precipitation that falls in a watershed flows out. To picture a watershed as a plastic-covered area of land that collects precipitation is overly simplistic and not at all like a real-world watershed.