Why is roll erosion considered to be the intermediate stage between sheet and gully erosion? No Google answers.
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RILL EROSION
> rill erosion is considered an intermediary stage between sheet erosion and gully erosion because
>rills enlarge due to increased erosion to form gully erosion.
>sheet erosion is the simplest form of erosion, in this case rain drops hitt the ground directly hence creating holes
>once sheets have formed, continued raindrops forms their way then hence formation of rills
>rills are small water lines that are parallel to each other that are formed by run off
>continued rains and increase in run offs follow the rill channels, the rills enlarges to form gulleys
>gulleys are advanced stage in this stage rills have developed to gulleys. Gulleys are large chanells
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