Answer:
When magma cools underground, it cools very slowly and when lava cools above ground, it cools quickly. When magma and lava cool, mineral crystals start to form in the molten rock. Plutonic rocks, which cool slowly underground, have large crystals because the crystals had enough time to grow to a large size.
Explanation:
It basicly startes to molden the rock, and more.
Although now it causes more harm than good because it doesn't really have a purpose, it is believed it once was used for humans to digest bone.
Answer:
Your answer should be A on the first two, and b on the third!!
Explanation:
hope this helped! :)
C ........................i think