Why are igneous rocks that form below earth's surface called plutonic rocks?

A) Pluto was the Greek god of the underworld.
B) Igneous rocks formed underground are the same as those formed on Pluto.
C) Plutonic, in Latin, means intrusive.
D) Plutonic means non-eruptive, and intrusive rocks don't erupt.


Answer: A

Environmental & Atmospheric Sciences

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