How many groups did you formed?
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Answer:
Step-by-step explanation:
3 groups
Explanation:
Sedimentary, igneous and metamorphic rocks
They often have large crystals (you can see them with the naked eye). Metamorphic — they are formed through the change (metamorphosis) of igneous and sedimentary rocks. They can form both underground and at the surface. Sedimentary — they are formed through the solidification of sediment.
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