The term "brain drain" refers to A. the decreased quality of the collegeminus−educated workforce. B. the diminishing returns to studying for an exam. C. the negative impact on brain function of an individual's overinvestment in human capital. D. highly educated individuals who leave developing countries for highminus−income countries.

When analyzing the election of 1876, what conclusion can be drawn? a. a majority of northerners wanted to enforce reconstruction policies more stringently. b.if tilden had won the electoral votes from louisiana, florida, or south carolina, he would have been elected president. c.the republican party had increased its support in the south. d.rutherford hayes did poorly in the western states. e.the republican party did a good job protecting the voting rights of african-americans in mississippi.

Name that largest artificial lake built in the 11th century

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.