causes of cancer in details
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Explanation:
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 thatcause cancer are called carcinogens. A carcinogen may be a chemical substance, such as certain molecules in tobacco smoke.
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Answer:
increase in no of cells in any part of body called cancer.
mainly causes are tabacoo consuming genetic defect, life style related factor, also age gender
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