Much of Japan has a long growing season because of .

A. The summer monsoons

B. Its volcanic soil

C. A warm water ocean flow

D. its hot summers and mild winters

Which one is the underlined word?

Answer volcanic eruptionsseismic waves from earthquakes;

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.