How is smoking injurious to health?
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Lung cancer is one of common causes of deaths in the world. The upper part of respiratory tract is provided with small hair-like structures called cilia. These cilia help to remove germs, dust and other harmful particles from inhaled air. Smoking destroys these hair due to which germs. dust, smoke and other harmful chemicals enter lungs and cause infection, cough and even lung cancer.
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Explanation:
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Smoking causes damage to lungs and this leads to take breathe properly.
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