How cancer is caused?

 

Dear student,
Please find below the answer:

There could be various causes for cancer, I am listing a few.

1 Some viruses can cause cancer. For example: Epstein-Barr Virus (EBV) makes some people vulnerable to developing cancer.

2. Physical factors like harmful radiation can also be a cause of it.

3. Some cancers can be hereditary too, in other words, they tend to run in families. Some people are at a risk of developing cancer because of gene modification passed from a parent to their offspring.

4. UV (ultraviolet) light from the sun can also cause cancer of the skin.

5. Chemicals such as arsenic, soot, coal tar, tobacco smoke. 

Hope this clears your doubt.
Regards.

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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. A carcinogen may be a chemical substance, such as certain molecules in tobacco smoke.
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Due to smoking and drinking vine
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