The only way to recover from sleep deprivation is to A. take medication
B. get recovery sleep
C. consume caffeine
D. exercise vigorously

Sailors went to special school to learn how to use the new technology that would them sail far distences. the school we know about was

What was one step that charlemagne took to unite his kingdom? a. he chose a single strong heir to inherit his throne. b. he drove muslim forces out of europe. c. he created and supported schools. d. he declared himself head of the catholic church.

Why is mary salter ainsworth a central figure in psychology?