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Sand dunes form when:

User Rcorre
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1 Answer

10 votes

Answer:

When put against the wind

Step-by-step explanation:

Dunes form when wind blows sand into a sheltered area behind an obstacle. Dunes grow as grains of sand accumulate. Every dune has a side that faced the wind, and a side that is protected from the wind.

User RockResolve
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