1.

Give scientific reasons on:Tobacco smoking causes cancer.

Answer»
  • 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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