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Along plate boundaries, which consequence results when lithospheric pressure decreases?

A)Increased magma production and volcanism
B)Lower silica content in extrusions
C)Reduced occurrence of deep earthquakes
D)Decreased plate subduction velocity

💡 Explanation

Decreased lithospheric pressure causes decompression melting which leads to magma generation and volcanism at plate boundaries, because the reduced pressure lowers the melting point of mantle rocks; therefore, magma production increases, rather than remaining static, given constant heat input.

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