Which of the following drugs is commonly snorted : heroin, peyote, marijuana, or opioids?

Which of the following is true of addiction? a) When the program asks a participant to move to a treatment center b) As an addicted person continues to use the drug s/he will need to use some of it to feel normal. c) When an addicted person stops using the drug s/he will feel worse without it than if he had never used it. d) As an addicted person continues to use the drug s/he will need more and more of it to get the pleasurable effect. e) All of the above

Explain the potential dangers, risks, and harms of combining marijuana with each of the following substances:  Barbiturates  Benzodiazepines  Opioids  Over-the-Counter Analgesics

Why Benzodiadepines consider as a better or safer sedative-hypnotic compare to Barbiturates? Or Why newer sedative -hypnotic are consider as a better/safer compare to older sedative -hypnotic?  Please answer at your own words