As of june 2016, approximately what percentage of the u. s. adult population identifies as transgender?

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?

How did ancient civilizations develope its agriculture and protect its population

What natural resource from west africa had a significant im pact on the growth of ghana