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If igneous rock forms above ground after a volcanic eruption, it ______________, forming ____________ igneous rock, such as obsidian which is a naturally occurring volcanic rock.

Question 13 options:

Cools quickly, extrusive


Cools quickly, intrusive


Cools slowly, extrusive


Cools slowly, intrusive

User Thrusty
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1 Answer

6 votes

Answer:

A-Cools quickly, extrusive

Step-by-step explanation:

C and D are wrong because the rocks cool quickly, not slowly, and B is wrong because it forms an extrustive igneous rock, not an intrusive igneous rock.

User Alsty
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