○ The diagram below shows the way in which sand dunes are formed. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The given illustration depicts a general process that details gradual formation of sand dunes. Overall, the natural mechanism of formation comprises three sequential main stages: initial displacement of sand particles from dry ground to wet regions, dune elevation, and stablized phase of dunes respectively. In the first stage, wind serves as the major force that […]

The diagram illustrates how sand dunes are gradually formed in deserts or on coast. Overall, sand dunes are formed under the influence of wind and the geographical locations of wet sand. Firstly, the small sand particles on dry ground in deserts or on coast are blown and lifted up by wind. If these particles happen […]