Desertic soil, also known as arid soil, is prevalent in regions with low rainfall and high temperatures. This type of soil is typically unproductive, lacking in essential nutrients, and mostly devoid of organic matter. Synonyms for desertic soil include "xerollic soil," which is dry with little vegetation, "loess soil," which is a yellowish-grey sedimentary deposit consisting of wind-blown dust, and "regosol," which is a soil with a thin layer of organic matter at the top, but is otherwise lifeless. Other synonyms include "sandy soil," "aridisols," and "entisols." Despite its infertile nature, desertic soil plays a vital role in agriculture and history and is home to unique flora and fauna.