Which of the following was a cause of the french and indian war? a) britain and france disputed borders in the ohio river valley. b) french and american smugglers competed for navigation rights on the ohio river. c) france and native americans disputed trading rights in the ohio river valley. d) native americans attacked british forts in the ohio river valley.

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