When a obstacle causes wind to slow down and deposits materials the materials pilenup and eventually form a?

Answer 1

When an obstacle causes wind to slow down and deposit materials, the materials can pile up and eventually form a dune. Dunes are formed through the accumulation of sand or other sediments carried by the wind and deposited behind the obstacle, such as a rock or vegetation. Over time, these sediments build up, forming characteristic features of dune formations.