why do so many volcanoes form along plate boundaries?

why do so many volcanoes form along plate boundaries?
Answer
Brief Explanations:
At plate boundaries, tectonic plates interact. At convergent boundaries, one plate sub - ducts beneath another, melting the mantle rock above it to form magma. At divergent boundaries, magma rises to fill the gap as plates move apart. This magma can reach the surface and form volcanoes.
Answer:
At plate boundaries, tectonic activity creates conditions for magma formation and eruption, leading to volcano formation.