How did pipeline transportation affect the economy of texas

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

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.

Which of the following statements best describes the concept behind labor unions?