In geography, an oasis (, plural oases, ) is a fertile area (often having a date palm grove) in a desert or semi-desert environment. Oases also provide habitats for animals and plants.
The word oasis came into English from Latin: oasis, from Ancient Greek: ὄασις, óasis, which in turn is a direct borrowing from Demotic Egyptian. The word for oasis in the later attested Coptic language (the descendant of Demotic Egyptian) is wahe or ouahe which means a "dwelling place".
Oases are made fertile when sources of freshwater, such as underground rivers or aquifers, irrigate the surface naturally or via man-made wells.
The presence of water on the surface or underground is necessary and the local or regional man…Read more on Wikipedia