What are three ways that magma can form

The three ways magma can form are when rock is heated, when pressure is released, and when the composition of the rock changes. The temperature of magma is 1300-2400F. Magma collects in magma chambers under the earth's surface, and can be come to the surface in the form of lava.

Dissociation then hydration dissolving

List of guarantees for people who get medical care.