What physical features separates washington from vancouver island in canada

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

Why did the fighting go on after the armistice was signed

Which of the following wrote detailed accounts about early native american? a) spanish b) french c) americans d) mexicansi need this !