Once sand<span> begins to pile up, ripples and </span>dunes<span> can form. Wind continues to move</span>sand<span> up to the top of the pile until the pile is so steep that it collapses under its own weight. The collapsing </span>sand<span> comes to rest when it reaches just the right steepness to keep the </span>dune<span> stable.</span>
Low-fat, low-cholesterol, and dairy-free diets are all diets that are necessary for health reasons. This is because these diets are needs for your body.
