Erg (landform) and western Asia, and Central Australia. In South America, ergs are limited by the Andes Mountains, but they do contain extremely large dunes in coastal Peru and northwestern Argentina. They are also found in several parts of the northeast coast of Brazil. The only active erg in North America is in the Gran Desierto de Altar () that extends from the Sonoran Desert in the northwestern Mexican state of Sonora to the Yuma Desert of Arizona and the Algodones Dunes of southeastern California. An erg that has been fixed by vegetation forms the Nebraska Sandhills (). Sand seas and dune
Influence of Arabic on other languages Examples are "information" to mean the imparting or acquisition of knowledge (Arabic "taṣawwur", mental impression or representation, from a root meaning "form") and "intention" (Arabic "manā", meaning). These words may almost be regarded as calques. French is widely spoken as a second language in France's former colonies in the Maghreb. Therefore, the list of words that are used or incorporated into the French spoken in this region (as a result of code-switching, convenience or lack of an equivalent term in standard French) is potentially endless. Such arabisms, are accepted within the local context but would not normally be known by