Why did truman and other world leaders want to european countries after the war?

The code of ethics of the sets forth certain basic standards that sociologists must follow in conducting research. question 14 options:

Lava and other matierls luanced from a volcano and into the air are referenced as

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?