Tоbаccо cоntаins mаny harmful chemicals. However, what substance in tobacco is primarily responsible for its addictive properties?Remember, you can ONLY use course materials to answer this and all quiz questions. This information can be found on the lecture notes discussed in class (also available in Canvas). It is considered cheating to look up/google information from resources outside of what we discussed in class. Find this information in the course materials for this class. Any cell phone use is strictly forbidden while taking this quiz.