Which idea does President Lincoln express in this excerpt? Question 7 options:

The Union exists only through the consent of sovereign states.

The Union requires a nationwide decision on slavery.

The Union matters more than current disagreements between states.

The Union will be preserved through military force if necessary.

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