freezethaw action, a process of physical weathering, scree, sharp jagged rock fragements formed from freeze thaw action, carbonation, a process of chemical weathering, carbonic acid, acid formed when water absorbs CO2, karst, landscape of bare surface limestone, Burren, a karst region in Ireland, turlough, seasonal karst lake, stalactite, hangs down from roof of a cave, stalagmite, grows up from floor of a cave, pillar, forms when a stalactite and stalagmite join, clint, flat topped block , grike, cracks between clints, limestone pavement, big area of bare limestone made up of clints and grikes, calcium carbonate, mineral in limestone, calcium bicarbonate, soluble mineral from chemically weathered limestone, CaCO2, formula for calcium carbonate, H2CO3, formula for carbonic acid, swallowhole, where a river goes down into a cave system, 10%, how much water expands by when it freezes, regolith, loose weathered material.

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