Good define unemployment as having no job teheheheh
... termed "hypotonic," meaning less solids (or more diluted) than inside the cell. For fluid movement in/out of cells, water will diffuse (via osmosis) from the hypotonic solution to the hypertonic one, assuming a permeable barrier (i.e. cell membrane) allows it. With this case, water will flow into the cell from outside.
For any terrestrial planet in the solar system, the core would be the densest layer, and the crust would be the least dense layer.
