Rocks are classified according to how they form A. Igneous rocks are formed by cooling of molten mineral material, or magma .
(Rocks; are classified; according to how they form A. Igneous rocks) (they; form; A. Igneous rocks) (Rocks; are formed; by cooling of molten mineral material, or magma)
Rocks they Rocks
are classified form are formed
according to how they form A. Igneous rocks
A. Igneous rocks
by cooling of molten mineral material, or magma