What is ________ develop where oceanic lithosphere bends downward and sinks into the mantle.?

This process is known as subduction, and it occurs at convergent plate boundaries where two tectonic plates collide. As the denser oceanic lithosphere is forced beneath the less dense continental lithosphere, it starts to sink into the mantle. This action creates deep ocean trenches and can also lead to the formation of volcanic arcs and chains as the subducted plate melts and generates magma that rises to the surface. Subduction zones are associated with high levels of seismic activity and can also trigger large earthquakes and tsunamis.