Igneous: Melting, Cooling, Solidification, Magma, Lava, Intrusive or Extrusive, Pumice or Granite or Obsidian, Sedimentary: Weathering, Erosion, Deposition, Compaction and Cementation, Tiny pieces of rock, Sediments, Layers, Pile up, Sandstone or Limestone or Conglomerate, Metamorphic: Heat and Pressure, Pressure and Heat, Change their form, Wavy lines, Gneiss or Slate or Marble,

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