Which statement best describes the distribution of wealth in the united states in 1890?
a: it was evening out across the classes
b: the working class was beginning to see a higher percentage of wealth
c: those living in the top ten percent held almost three-quarters of the wealth
d: the upper classes were losing a percentage of the wealth at high rates

Marine exptoration of oil uses seismic waves to locate oil in the seabed. what is a negative impact from seismic waves on the aquatic ecosystem of the ocean? a.seismic waves kill microoganisms b.seismic waves disrupts the sand and causes seafloor erosion c.seismic waves have virtually no adverse affects on marine life d.seismic waves damage the sonar that dolphins and whales use to orient themselves underwater