What system of writing was used by the ancient Maya? A. obsidian B. glyphs C. codices D. cenotes

What role did natural resources play in african politics?

Why is cheating in college wrong? expecting a good answer about it a good opinion. you.

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?