What does Stevens warn might happen if the situation of formerly enslaved African Americans does not improve

Which type of market produces the highest level of output at the lowest price to consumers?

What makes water a renewable source

Martin, a 32-year-old human relations administrator at a university, believes that all professors over age 50 are incapable of learning the new educational technologies and are content to keep presenting their same "tired, boring" lectures. he often expresses these views to other administrators and does not encourage any of the "older" faculty members to attend professional development meetings related to new teaching approaches nor does he suggest that the university send them to any of the technology conferences. martin is exhibiting