Answer:
An erg is a desert that has dunes also known as a sand sea. Individual grains of sand are picked up by the wind and bounce along the ground until they begin to accumulate. This often causes ripples, as seen in the photo to the left. Eventually, the sand may begin to build up, forming a large dune.
Explanation:
<span>The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel. Hope it helps :)</span>
Two of the major climate regions on earth include mountain and flat
They are a Type of group project(?) They are big, sometimes informal, groupings of individuals or organizations which focus on specific political orsocial<span> issues</span>