You begin traveling south from madison, wisconsin. which of the following capital cities would you reach first?
columbus, ohio
st. paul, minnesota
jefferson city, missouri
springfield, illinois

Springfield, Illinois 

Answer:   [b]:   "cultural" .

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.