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The three types of rocks, igneous, sedimentary, and metamorphic, are classified by.

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Answer:

physical properties/changes and how they are formed as part of the rock cycle such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle

igneous rocks -> formed from magma/lava that has undergone pressure and solidified when cooled

metamorphic rocks -> when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.

sedimentary rocks -> formed through compression of sediment/mud forming from pressure on the seabed

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