Introduction. The asthenosphere is the layer of the Earth that lies below the lithosphere. It is a layer of solid rock that has so much pressure and heat the rocks can flow like a liquid.The rocks are less dense than the rocks in the lithosphere.ntroduction. The asthenosphere is the layer of the Earth that lies below the lithosphere. It is a layer of solid rock that has so much pressure and heat the rocks can flow like a liquid.
Dictionary entry overview: What does directive mean? â¢ DIRECTIVE (noun) The noun DIRECTIVE has 1 sense: 1. a pronouncement encouraging or banning some activity Familiarity information: DIRECTIVE used as a noun is very rare. â¢ DIRECTIVE (adjective) The adjective DIRECTIVE has 1 sense: 1. showing the way by conducting or leading; imposing direction on
Command Definition. A command is an instruction given by a user telling a computer to do something, such a run a single program or a group of linked programs. Commands are generally issued by typing them in at the command line (i.e., the all-text display mode) and then pressing the ENTER key, which passes them to the shell. A shell is a program that reads commands that are typed on a keyboard and then executes (i.e., runs) them.