Question

Oral cancer due to tobbacco chewing is due to

Answer 1

Answer:

Researchers aren't exactly sure what causes oral cancers. But scientists now believe that cancers start after there's damage or mutations in the genetic code that controls cell growth and death. These factors are known to increase your risk of developing oral cancer: Tobacco use.

Explanation:

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Answer 2

Answer:

nicotine and harmine are prsent in tobacco which leads to many lungs , hearts, and cancers disease

Explanation: