What were some of the biggest hurdles they had to clear as a
collective group?
what was the result?

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

According to the map, most mining occurs in the a. northern b. southern c. eastern d. western

He table below shows the number of immigrants to the united states from different regions of europe between 1871 and 1910