Do we know the name of the first person to reach the summit of mount everest? explain

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?

What kind of map is this? a. topographical map b. political map c. weather map d. regional map

In which region of the north were most free black males permitted to vote in 1860