How does pressure affect the melting point of rock?

If the root word engage means “to connect with something,” what does the word disengage mean in the following sentence? he disengaged the gears by stepping on the clutch pedal.a.added more engine powerb.activated a connection to the pedalc.stalled the engined.released a connection to the pedal

Matches the chemical name of each oxide of phosphorus to its chemical formula

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?