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1.strong wind and sand against the rock:mechanical weathering or chemical weathering
2.repeated heating and cooling of rocks:mechanical weathering or chemical weathering
3.freezing and expanding of water in rocks:mechanical weathering or chemical weatheri
4.too much pressure of water waves in rocks:mechanical weathering or chemical weather
5.clay and soft rock as a result of the combination of water and rock substance
6.combination of oxygen and rock substances
7.formation of stalactites and stalagmites from limestone dissolves and broken down by acidic water