Under the DSM-5, there are eight types of substance use disorders that doctors can diagnose. Caffeine is also listed as a substance-related disorder under DSM-5, however, it is not designated as a substance use disorder.2. Alcohol.
adverbs answer the questions-how ,why,when and where.ie,adverb of manner,adverb of purpose and reason,adverb of time and adverb of place.
    a research question is question that you research and make a hypothesis (educated guess) to form the correct answer!!!!!!!!!!!!dentifying a topic of interest is the first step in the process of  asking and refining a question to use as the basis of a research  essay. 3 people found this useful.