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The image depicts three diagrams showcasing the formation and movement of sand particles: the first diagram illustrates wind blowing over dry ground, where sand particles accumulate to form dunes, with the wind direction indicated by arrows; in the second diagram, the wind continues to blow, causing more sand particles to accumulate and move over the dune; the third diagram shows the influence of rainfall on the dunes, where wet sand particles settle and form a more compact dune structure.
Given the complexity of the image, the above description may not be entirely accurate.
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The flowchart illustrates the process of making sand dunes in some deserts. And taking into account different types of sand and ground
It is clear that sand dunes are formed with different wind directions. At first glance, wet ground does not move though it is obvious that it depends mainly on the direction and quantity of sand above the surface. The first stage represents the amount of sand and wind blows directly on the sand
The second stage shows the middle of the process of creating sand dunes. In comparison to the first image it is clear that the sand dunes are slightly grown
The last stage provides the completed process of sand dunes. And the process of forming sand dunes are unstoppable
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