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Tumours are groups of abnormal cells tha...

Tumours are groups of abnormal cells that form lumps or growths. They can start in any one of the trillions of cells in our bodies. Tumours grow and behave differently, depending on whether they are cancerous (malignant), non-cancerous (benign) or precancerous. There are several types of tumours that get converted into cancer in later stage. Enlist any three causes of cancer that get induced in the human body.

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**Step-by-Step Solution:** 1. **Understanding Tumours**: Tumours are abnormal masses of tissue that can arise from any cell in the body. They can be classified as benign (non-cancerous), malignant (cancerous), or precancerous. 2. **Identifying Causes of Cancer**: There are various factors that can induce cancer in the human body. Here, we will focus on three significant causes. 3. **Cause 1 - Tobacco Use**: Smoking tobacco is a well-established risk factor for various types of cancer, particularly lung cancer. The carcinogens present in tobacco smoke can damage DNA and lead to uncontrolled cell growth. ...
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