Plural form of 'erosion'; multiple instances of the gradual wearing away of rock, soil, or other material by natural forces.
From 'erosion' plus the regular plural suffix '-s.' The term is widely used in geology, environmental science, and geography.
Different types of erosions—water erosion, wind erosion, coastal erosion—create completely different landforms, so understanding which type shaped an area tells you its climate and history.
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