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Give scientific reasons on:

Tobacco smoking causes cancer.

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  • Tobacco smoke contains harmful chemicals like pyridine, ammonia, aldehyde furfural, carbon monoxide, nicotine, sulphur dioxide etc. 
  • They cause uncontrolled cell division. 
  • Tobacco smoke is full of minute carbon particles which cause normal tissue lining of the lung to transform into thickened black tissue. This leads to cancer. 
  • Therefore, tobacco smoking causes cancer.

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