Why are scarcity and choice basic to the study of economics?

According to subpart d, research with children may be eligible for exemption when: the children will be asked to complete a surveythe research involves the use of educational teststhe children will be interviewed by the researcher. the research with children will involve participant observation with researcher interaction.

What idea did most of the founding fathers, despite their differences, agree with?

Why would someone who is studying the history or culture of this time. find this text interesting important or useful?