Question

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Igneous rock is formed by the cooling and solidification of molten Earth materials. Igneous rock forms when magma or lava cools. If igneous rock forms above ground after a volcanic eruption, it ________________ forming ____________ igneous rock, such as obsidian which is a naturally occurring volcanic glass.
A) cools quickly, extrusive
B) cools quickly, intrusive
C) cools slowly, extrusive
D) cools slowly, intrusive

Answer 1

C) cool slowly,extrusive............

Answer 2

Answer:

a) cools quickly and forms extrusion igneous rock.

Explanation:

extrusive means outside.

there it is an extrusive igneous rock