Where does the water involved in melting at subduction zones come from?
a) Water from the ocean is pulled down by the subducting plate and is released during metamorphism.
b) Water contained within minerals in the overriding plate is released during metamorphism.
c) Water from the ocean is pulled down by the subducting plate, is absorbed into minerals, and is released during metamorphism.
d) Water contained within minerals in the subducting plate is released during metamorphism.
d) Water contained within minerals in the subducting plate is released during metamorphism.
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