Mountain building causes metamorphism because .
a) mountains are heavy and they compress the rocks under them.
b) mountains are heavy and they push shallow, cool rocks to depths where they get heated
c) mountains form by the gradual buildup of material that comes from other areas and this can produce an uneven pressure on rocks
d) all of these

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

Explain what happens at the saturation point when adding salt to water at room temperature.