What are the symptoms of colon cancer and risk factors?

symptoms are :

A persistent change in your bowel habits, including diarrhea or constipation or a change in the consistency of your stool.

Rectal bleeding or blood in your stool.

Persistent abdominal discomfort, such as cramps, gas or pain.

A feeling that your bowel doesn't empty completely.

Weakness or fatigue

Unexplained weight loss

answer: i would say the brain but it seem that you have a brain.

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.