Biology, 01.04.2021 16:50 crookdamian21
10
Obsidian and pumice are extrusive igneous rocks and lack crystals. Why is it that these rocks
do not have crystals? *
(1 Point)
There were no minerals in the magma
The lava cooled slowly deep inside the Earth
The lava cooled too quickly above the Earth
The pressure was too great to make any crystals
Answers: 2
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Obsidian and pumice are extrusive igneous rocks and lack crystals. Why is it that these rocks
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