Why Does Subducting Oceanic Crust Melt into Magma

question 87

Multiple Choice

Why does subducting oceanic crust melt into magma?

• A)because the crust is hotter in subduction zones
• B)because seawater mixes with and lowers the melting point of rock
• C)because the crust is chemically different in subduction zones
• D)because of the weight of the overlying continental crust

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