Travel throughout Europe is facilitated by an extensive railroad system. This system is an example of which type of industry?

Why do governments supply public goods and services instead of selling them to those people who use them

Astudy that involves interviews of adults is eligible for expedited review. the researcher wants to add an adolescent population (aged 12 to 17) to the study and has designed a parental permission and assent process. no additional changes are planned. which of the following statements about review of the revised protocol is accurate? the research would only be eligible for expedited review if the adolescents are capable of understanding the same consent forms used for the adult population.the research would only be eligible for expedited review if the adolescents have been declared to be emancipated minors.the new research would need full review by a convened irb because children are a protected population.unless the nature of the questions would raise the level of risk to > minimal for adolescents, the research would still qualify for expedited review.

The government has different agencies responsible for protecting the many cultures represented in america. explain the roles of the national endowment for the arts, the national endowment for the humanities, and the national archives and records administration.