Final answer:
Cancer is a disease that causes cells to divide out of control. Mutations in genes that control the cell cycle can lead to the development of cancer. Cancer cells can spread through local invasion or through the lymphatic system, forming new tumors in different tissues.
Step-by-step explanation:
Cancer is a disease that causes cells to divide out of control. The process of a cell escaping its normal control system and becoming cancerous happens when mutations occur in genes that control the cell cycle. If the abnormal cells continue to divide unstopped, they can damage the surrounding tissues, spread to other parts of the body, and eventually result in death. Cancer cells can spread through local invasion or through the lymphatic system, and they can form new tumors in different tissues through metastasis.