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Lana71 [14]
3 years ago
13

When lava cools and hardens quickly on the Earth's surface, the rock grains are

Biology
2 answers:
Anna [14]3 years ago
5 0
The rock grains are large
Gemiola [76]3 years ago
4 0

Answer:

Magma that cools quickly forms one kind of igneous rock, and magma that cools slowly forms another kind. When magma rises from deep within the earth and explodes out of a volcano, it is called lava, and it cools quickly on the surface. Rock formed in this way is called extrusive igneous rock.

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