A mid-sized jet, the 757 isnât nearly the size of a 747 or 777, but thanks to a nasty aerodynamic quirk it produces an outsized wake that, according to one study, is the most powerful of any airplane. To avoid wake upsets, air traffic controllers are required to put extra spacing between large and small planes.
Causes: Colorectal cancer: All kinds of cancer occur when cell division, normally a very highly regulated process, gets out of control. While environmental factors can certainly contribute to a person's risk of cancer (e.g. smoking, diet, and exercise), most cancers have a genetic basis too.
Colorectal cancer is the most frequent malignant neoplasm of the large bowel and represents a major health problem. According to the Cancer Statistics 2010 from the American Cancer Society, the number of new colorectal cancer cases in the United States was estimated at 102,900 and related deaths at 51,370 (Jemal et al.olorectal cancer is the most frequent malignant neoplasm of the large bowel and represents a major health problem. According to the Cancer Statistics 2010 from the American Cancer Society, the number of new colorectal cancer cases in the United States was estimated at 102,900 and related deaths at 51,370 (Jemal et al.