Why is the population of the united states so diverse?

Agood deal of what that brain believes it is experiencing depends on its

The procedures for reporting potential unanticipated problems involving risk to subjects or others to the irb are: stated in the human subject protection regulations, but not in the drug or device regulationsincluded in the consent processdetermined by research staffdetermined by the institution in its written policies and procedures

In which type of economy are these decisions made by the producers , consumers, and the goverment?