Why does the United States have a long history of opposition to Communist ideals?

Aresearcher is studying women recently admitted to a state prison. all potential subjects must have children under the age of five. research subjects will be given a basket of toys to use at their children’s first visit that the children can then take home. in assessing this proposal, the irb needs to determine that the toys are: age appropriate. not an excessive incentive. educational. of high quality.

What does the term mandate” mean in terms of civil rights and liberties?

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?