If a researcher has a theory and wants to prove that it is true by going out and making observations, they are using: mathematical theory natural theory deterministic theory deductive theory string theory

Greg goes to a high school and observes the way students talk to each other. he makes notes on the words used, the atmosphere of the school and the way the students present themselves to each other. this is an example of a( research method.

Countries that are neither core nations nor peripheral nations

On a production possibility curve, data points that fall outside of the curve represent what