Blank is when a person does not need a drug to deal with the problems of life, although they think they do. a) psychological dependence b) withdrawal c) physical dependence

If you were running a marathon, which type of muscle fibers would be most useful to you? a. slow-twitch b. fast-twitch, type i a c. intermediate-twitch, type ii b d. slow-intermediate twitch, type i b select the best answer from the choices provided. a b c d