B. Because nickel silicon and magnesium is not correlated to lava(magma) so there for b is your answer
Gneiss. It is a high grade metamorphic rock, having been subjected to higher temperatures and pressures than schist. It is formed by the metamorphosis of granite, or sedimentary rock.
Answer:
Mercator projection is a map projection that was introduced by Gerardus Mercator in 1569. This projection is most widely used in maps.
Explanation:
Answer: convergent plate boundary
Explanation: when a plate capped by oceanic crust is subducted under a continental lithosphere an accretionary wedge and fore-arc basin forms an active continental margin between the trench and the continent .the magma that is created by ocean-continent convergence forms a magmatic arc the surface expression of a magmatic arc is either a line of andesitic island such as Aleutian island .
