1. What does the graph show about unemployment among African Americans compared to unemployment in the total population? What can you infer about unemployment among whites?

During the late 19th century, russia's settlement and development of siberia was made possible by the invention of the

Advances in technology generally result a.) a higher standard of living for everyone b.) greater productivity c.) more jobs for everyone d.) more government regulation

Which of the following  bestillustrates a negative reinforcer?               a.  copland gives up candy to stave off chronic acid indigestion.    b.  nancy learns that she prefers chocolate over vanilla.    c.  carmine changes his major to english lit after failing a math exam.    d.  on a hot day, lindberg always drinks lemonade.