"what is/are the advantage(s) of a multibeam sounder compared to traditional echo sounding? "

Before tuberculosis was understood to be a communicable disease, and before the discovery of antibiotics to treat it, a major outbreak could kill or cripple a significant portion of a nation’s labor force. how would such an event affect the economy? illustrate the effect by dragging to shift either the aggregate demand curve or the long-run aggregate supply curve.

Why was frederick douglass encouraged by the dred scott decision?

In the spring of 1989, thousands of protesters gathered in tiananmen square in beijing, china. they rallied around a plaster statue that resembled the statue of liberty which they called “the goddess of democracy.” these protestors were seeking a) united states assistance in gaining better health care. b) economic reforms which would allow more chinese exports. c) the boycott of the future olympic games scheduled for beijing. d) political reforms to allow more freedom of speech and political representation.