27.Addiction to tobacco is caused by A. Cocaine B. Benzopyrene C. Nicotine D. Caffeine
Option C. Tobacco is obtained from dried and cured leaves of young branches of two different species of tobacco plant Nicotiana rustica and Nicotiana tobaccum. Tobacco contains nicotine which is a addictive chemical. It increases the secretion of dopamine, a neurotransmitter. It also causes an increased rush of adrenaline in body. Tobacco is used in the form of cigars, cigarettes, beedi, gutka, hookah etc. It is highly addictive and long term usage can harm the brain.
