desert![click to hear](/images/speaker.jpg)
Hot region where aridity (less than 4 in of annual rainfall) is such that plant and animal life is almost nonexistent.
saline lake ![click to hear](/images/speaker.jpg)
Lake characterized by high salt content due to considerable water evaporation and the concentration of dissolved mineral salts.
oasis ![click to hear](/images/speaker.jpg)
Desert zone made fertile by the presence of underground or surface water.
palm grove ![click to hear](/images/speaker.jpg)
Zone where palm trees are planted.
wadi ![click to hear](/images/speaker.jpg)
Often dry watercourse that is subject to sudden flooding in the event of rain.
mesa ![click to hear](/images/speaker.jpg)
Isolated plateau with a flat summit and very steep sides; it features a layer of rock that is resistant to erosion.
rocky desert ![click to hear](/images/speaker.jpg)
Most common type of desert, where rock fragments fracture due to temperature variations between night and day.
sandy desert ![click to hear](/images/speaker.jpg)
Desert where minuscule grains of rock (sand) form dunes by wind action.
needle ![click to hear](/images/speaker.jpg)
Tapering pointed column of rock shaped by the wind.
butte ![click to hear](/images/speaker.jpg)
Rocky hill shaped by erosion, with steep sides and a flat summit; it is smaller in area than a mesa.