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Nicotine stimulates the adrenal gland to release adrenaline, which increases heart rate and causes addiction.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Drugs and Alcohol Abuse - Opioids Cannabinoids Cocaine Adolescence
Tar in cigarette smoke contains carcinogens that increase the risk of lung cancer.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Cancer - Causes Types Treatment Metastasis
Tar, a component of tobacco smoke, contains carcinogenic substances that increase the risk of lung cancer.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Cancer - Causes Types Treatment Metastasis
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