s9pad5ialmarijene s9pad5ialmarijene

09-12-2015
Social Studies

Answered

How are igneous rocks formed?

ALava or magma heats up and crystallizes.
BHail falls and melts.
CGlaciers melt.
DLava or magma cools and then crystallizes.

Verified Answer :

joshrulez213 joshrulez213

09-12-2015

its D.obsidian is a rock that is cooled from lava to form a hard,black glass that was made into spear tips.

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