How many ways are there to choose a president.

What are objects called that have value in and of themselves as well as value as a means of exchange? custom commodity money currency simple money

Which of the following statements most accurately describes the requirement for the documentation of minors’ assent to participate in research? parents must approve written documentation.documentation is required unless waived by an irb.to protect minors documentation is always required.federal regulations do not require the documentation of minors’ assent.

Roman builders used rows of arches in there buildings to form a curved ceiling called what