why cannot we give sand dune as a landmark while giving direction in a desert ?
Answers
Explanation:
In deserts, sand dunes may be composed of a variety of minerals. There is little weathering and so less stable minerals are left behind. Dune sands are usually very uniform in size and shape. Particles are sand-sized, because larger particles are too heavy for the wind to transport by suspension.
Answer:
In deserts, sand dunes may be composed of a variety of minerals. There is little weathering and so less stable minerals are left behind. Dune sands are usually very uniform in size and shape. Particles are sand-sized, because larger particles are too heavy for the wind to transport by suspension
By walking or playing on sand dunes, we damage the beach grass and other plants that hold the dune together. It takes only a few footsteps to damage the extensive root system of beach grass, and when that happens, the plant can no longer hold sand in place. Over time, the dune and all its benefits will be lost.