This huge 255 piece Geoscience Mega Bundle features:● Crystals and Minerals (crystals, minerals, semi-precious stones)● Sediment Deposition - (fluvial, glacial, aeolian)● Plate Boundaries - (convergent, divergent, transform)● Soil and Compost - (compost cycle, soil horizons, loam, silt, clay, sand)● Weathering and Erosion - (wind, mechanical, biological,chemical). ● Volcanoes set - (cinder cone, strato, shield, and fissure)● The Rock Cycle set - (metamorphic, igneous, and sedimentary)● L