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Biology, 03.02.2020 17:43 starfox5454
Obsidian, pumice, and scoria have fine grained or no visible crystals because they were formed. a) (cooled fast/cooled slow) b) (inside/outside) c) (above the earth's surface/below the earth's surface) d) intrusive/extrusive)
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Obsidian, pumice, and scoria have fine grained or no visible crystals because they were formed. a) (...
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