Why is one way to distinguish metamorphic rocks from igneous rocks mineralogy?
A) The composition of each rock results in different texture.
B) The composition of each rock results in different colors.
C) Igneous rocks, since formed underground, are made up of the same elements as metamorphic rocks.
D) Metamorphic rocks are primarily made up of silicates, which igneous rocks don't primarily contain when cooled from magma.
Answer: D
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