hot solid rock in the earth a melts at a higher temperature if volatil
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Question
Hot, solid rock in the Earth A. melts at a higher temperature if volatiles such as water and carbon dioxide are added. B. maintains uniform composition as it melts and
becomes magma . C. is cooler than surface lava because of the pressure of overlying rock. D. may melt if heat is transferred to it from hot mantle rock rising up into the crust.