Answer:
cannabis
Explanation:
Drug classes that are involved in SUD include alcohol; cannabis; phencyclidine and other hallucinogens, such as arylcyclohexylamines; inhalants; opioids; sedatives, hypnotics, or anxiolytics; stimulants; tobacco; and other or unknown substances.
Mucus and Cilia help filter dust and dirty. Cilia are small, hair like structures in the nasal passage and trachea. Mucus is also found in the nasal passage and trachea.