QUICK PLSS. A civil service exam is required for all of the following positions EXCEPT: A. financial economists
B. foreign service
C. law enforcement
D. air traffic controllers

Which of the following was not a result of early humans increasing proficiency at finding food

Humans are the only animals capable of communication

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?