1.) Compare and contrast Hopewellian (Northeast, 200 BCE to 500 CE) and Mississippian culture (Southeast, 1000-1300 CE). How were they similar? How were they different? 2.)Why do you think the agricultural success of Mississippians led to social stratification?
3.)How did trade influence large Mississippian societies like Cahokia or Poverty Point?

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Look at the map of cities in the united states at the turn of the twentish century what impact did railroads have on cities across the united states at the turn of the twentish century

Why did river valleys most farming impact the lives of neolithic peoples?

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