How does subduction lead to volcanic activity?

Subduction occurs when one tectonic plate is forced beneath another into the mantle, creating conditions for volcanic activity. As the subducting plate descends, it releases water and other volatile compounds into the overlying mantle, lowering the melting point of the mantle rocks. This process leads to the formation of magma, which rises to the surface, resulting in volcanic eruptions. Additionally, the intense pressure and heat from the subduction process contribute to the melting of rocks, further fueling volcanism.