When oceanic crust is subducted beneath continental crust, partial melting can occur. Which of the following best explains why the resultant magma rises through the crust toward the surface

Magma is less bouyant than the other rocks on the crust.

Explanation:

Magma is a molten or semi liquid form of a rock. When magma cools down it forms igneous rock.

Magma is its molten or semi liquid state has it has lesser bouyancy ( less dense) compared to other rocks percent on the crust.

It is this difference in the density when it is large enough as well as an increased pressure that causes magma to rise through the crust towards the surface.

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