In many songbirds, the voice box or __________ is a double structure

One of the results of having a growing store of knowledge from being exposed to more material is that adolescents have

A) greater inhibitory capacities. B) increased automatization. C) increased memory capacity. D) more social skills.

Medical examiners often attribute death to heroin overdose without assessing blood levels. In one study, careful toxicological analysis at autopsy of such cases often revealed

A) low blood levels of heroin. B) high blood levels of other CNS depressants such as alcohol and benzodiazepines. C) high levels of disulfiram. D) both A and B E) both A and C