Question

why canser occur . follow me plz give reply I will mark you brainlist​

Answer 1

Answer:

due to smoking cigarette

eating guthka.

all this are very bad thing

so avoid from now.........

Answer 2

Cancer is caused by accumulated damage to genes. Such changes may be due to chance or to exposure to a cancer causing substance. The substances that cause cancer are called carcinogens. ... The cause of cancer may be environmental agents, viral or genetic factors.Cancer is caused by changes (mutations) to the DNA within cells. The DNA inside a cell is packaged into a large number of individual genes, each of which contains a set of instructions telling the cell what functions to perform, as well as how to grow and divide.