Which part of the earth is hot enough to melt rock?

In the diagram below dab and dac are adjacent angles

The incident command system (ics) is: a. most applicable to the management of complex incidents that extend over many hours or days. b. a military system used in domestic incidents to ensure command and control of federal resources. c. a standardized management tool for meeting the demands of small or large emergency or nonemergency situations. d. a relatively new approach created based on the lessons learned from hurricane harvey disaster operations.

The process by which liquid water changes into water vapour is called what ?