63. According to the theory of plate tectonics, which of the following is true? Select all that applyA) The matching coastlines that form the Earth's continental boundaries are evidence of an earlier supercontinent known as Pangaea. B) Glacial drift is best explained as a feature of the gradual movement of continental land masses.C) Volcanic activity along plate boundaries contributes to the creation of mountains and mountain ranges.D) Most of the major continental mountain ranges are the product of a process of subduction.

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