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how did the spread of recorded music affect perceptions of america abroad?

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

Whose plan centered on keeping the federal budget balanced, instituting tax cuts, and developing public works projects?

What types of subjects did public high schools in the 1900s emphasize and why