How many cases of measles would you predict were reported last year?

According to the aztec history, how did the aztecs know where to build their new city of tenochtitlan? why was this a good location?

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?

Which continental leader form a franco american alliance in 1778