Ключевые слова: abstract, abuse, addict, addiction, bio, biochemistry, biology, chemical, chemistry, cigarette, compound, connected, dependency, depression, despair, disease, dots, drug, education, formula, habit, health, illness, laboratory, lines, medical, medicament, medicine, metabolism, molecular, molecule, narcotic, nicotine, organic, pattern, physiology, problem, school, science, scientific, sick, sign, smoking, social, structural, substance, symbol, system, text, therapy,