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 risk factors. Colorectal cancer is the fourth most common form of cancer (or third, excluding skin cancers) in both men and women in the United States. Knowing the risk factors for colorectal cancer may help you take preventative measures to reduce the likelihood of developing the disease.