Coastal Weathering
Salt weathering - water evaporates leaving salt crystals, which can expand and fracture rock
Biological weathering - burrowing animals and roots from trees/plants can break up
Coastal Erosion
Hydraulic action - waves trap air in cracks in the rock. Pressure of water and compressed air causes rock to crack
Abrasion - particles in waves crash againt cliffs and break bits off
Attrition - particles in waves crash against each other
Solution - seawater slowly dissolves cliffs
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