Which was an economic effectof world war 1

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

The fact that were was no national military under the articles of confederation was a weakness in which area of government? a.)legislative b.)judicial c.) administrative d.)economic

In some african american communities, unemployment was as high as percent.