The life of early humans was nomadic. why?

What does this quotation from the introduction of thedeclaration of independence do?

The defendant and an accomplice were on trial together for burglary. both had given confessions implicating themselves and their accomplice. at trial, the defendant maintained that his confession had been obtained through improper coercion by the police. for the purpose of countering the claim of coercion, the prosecution seeks to place the accomplice’s confession into evidence. after objection by the defendant’s counsel, the judge agrees to issue a limiting instruction to the jury that the confession is to be considered only with regard to the question of whether the defendant’s confession was coerced. may the accomplice’s confession be admitted under that condition?

Aresearcher conducting behavioral research collects individually identifiable sensitive information about illicit drug use and other illegal behaviors by surveying college students. one of the subjects is in an automobile accident two weeks after participating in the research study. is this an example of an unanticipated problem that requires reporting to the irb? yes, this must be reported because it was not listed as a risk of study participation in the consent form (was unexpected) and the subject experienced harm. yes, this must be reported because it involved a subject in a research study and it’s up to the irb to determine if it was related to participation. no, this does not need to be reported because it was assessed by the researcher as unrelated to the research study. no, this does not need to be reported to the irb since the researcher reported it to the sponsor of the study.