Question

why cancer occurs why why why​

Answer 1

Answer:

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. Occupational risk factors, including carcinogens such as many chemicals, radioactive materials and asbestos.

Answer 2

There is not just one type of cancer just search on web and you will be surprised to see the variety in this deadly disease...

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.main mortal cancerous cause is a clot or embolus