two ways by which the igneous rocks are formed:Igneous rock is formed by the cooling and solidification of the magma below the earth's surface.Igneous rock is also formed on the surface by volcanic activity.
Igneous rocks are of two typesIntrusive igneous rocksExtrusive igneous rocks
Igneous rocks are formed by two waysIgneous rock is formed when the hot molten magma cools slowly and solidifies below the earth's surface.
This type of rock is called intrusive igneous rock.
example are granite and Diorite.When the hot magma present inside the earth, flows out to the surface by the volcanic activity and cool rapidly to form extrusive igneous rocks.
Examples are basalt and andesite.
2. the cooling of lava.
when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.
answer; polycythemia is the correct answer;