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Answer the following with respect to Caner.

(a) How does a cancerous cell differ from a normal cell?
(b) Benign tumor is less dangerous than malignant tumor. Why (c) Describe causes of cancer.
(d) mention two methods of treatment of the disease.

Class XII
Human health and disease


Cancerous cells have regulatory control over there growth and division is lost while normal cell divide and grow with regulatory mechanism.Normal cell are of average size while cancerous is much more in size.
Benign tumour is less dangerous because it remained confined to a organ while malignant tumour spread from one organ to another.
Surgury and radiotherapy are two ways to cure cancer.
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