Cancer is a disease in which there are abnormal and uncontrolled proliferation fo cells that are capable of invading other tissues and thus spread to different parts of the body.
The cancers usually result because of mutations in certain genes that are responsible for controlling the cell division and timely regulated the cell death so that there is no abnormal proliferation, however, due to the mutations in these genes the control fo the cell cycle is lost and hence cancer is caused.
The mutations are a result of several factors such s chemicals called carcinogens which include tobacco smoke, radiations or due to inherent genetic defects.
This is a toxic biological substance or disease-causing organism that is hazardous to the health of people. This is the result of uncontrolled cell division. Often caused by mutations. Mutations may be caused by environmental factors such as radiation or chemicals.---The Answer Is (CANCER)
