How is it possible that high pressure is more dense than low pressure

The layers of earth are based on what two sets of characteristics?

The creation of the european union has had all of the following effects except

Liquefaction is a. a quicksand-like condition arising in some wet soils during earthquakes. b. flooding caused by tsunamis. c. flooding of coastal areas due to tectonic subsidence. d. flooding caused by dam failure resulting from an earthquake.