The diagrams illustrate the formation of sand dunes from sand particles.

The diagram describes the process of sand dune formation from sand particles. Overall, the process of developing sand hills consists of three main steps, commencing in moving the sand grains and culminating in forming the sand dunes. In the first stage, sand particles are blown by wind and transferred across the wet and dry ground […]

The three pictures illustrate how to form the sand dunes from sand particles. Overall, there are three clear stages in the process, starting with the sand particles which is affected by wind and ending with the sand dunes in the wet ground. In the first diagram, the distinct sand particles are blown by wind over […]