Match each rock class with the process it is formed by.   Igneous rocks are formed by Sedimentary rocks are formed by Metamorphic rocks are formed by   1. The crystallization of minerals out of magma or lava 2. The solid state recrystallization of pre-existing minerals 3. The cementation of pieces of broken minerals and/or rock fragments 4. The precipitation of shells by clams 5. The accumulation of sediment

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