What is meant by the phrase “Keeping up with the Joneses”

The photograph shows children in germany after wwi. the photograph was most likely taken to show?

Which did president carter refuse to do in his attempt to free american hostages taken by iran?

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