because they are duh
Both form weather dune is has sand delta water
Deltas and dunes are alike in a couple ways. One way is that they were both formed by the process of moving sand. Another way is that they can be both found near, under, or above water.
the top of a sand dune is called the crest of the dune.
A hill of sand in a desert is normally referred to as a dune
A sand dune is a landform, not a climate.
A sand dune is a pile of wind-blown sand.
A sand dune is the deposition of windblown sand.
A sand dune that got blown away
A sand dune is a Constructive force.
A Sand Dune, more specifically a "Seif Dune" or a "Barchan Dune".
small hill of sand caused by the action of wind
It is a sand dune that is formed at right-angle to the prevailing wind.