Write a letter to the President of the United States, your Senator, or your member of Congress in the House of Representatives about some issue in foreign affairs that interests you. Explain why the issue concerns you and state what steps you believe the United States should take.

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?