Scientificly, sand dunes were formed by chemical weathering.
Mixture
water and sand mixed together into one great big form called sinking sand or it can just be very mucky water
No sand is not a land form because it is a element of a land form
Yes, basically sand is a form of sediment.
The wind causes movement
Sand. Sand is a form a eroded igneous rocks, which is then undergoes cementation/compact to form sandstone.
The plural possessive form of "sand" is "sands'."
because sediments has sand in it
You can get sand form the beach or you can buy it from a shop.
wind
glaciers