What do UN peacekeeping forces do? intervene in active military engagements
intervene before a conflict starts
intervene after a peace agreement has been reached
intervene in civilian disputes, not military disputes

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