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What is the main factor that changes rocks during contact metamorphism?

A. heat
B. pressure
C. chemical environment

User Mulan
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Metamorphic rocks are one of the three types of rock classifications, the other two being igneous and sedimentary. Rocks are classified by how they formed. The processes under which they were formed. Metamorphic rocks are rocks that have changed in shape and texture due to heat and pressure. Hope this helped☺️
User Aromanarguello
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