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desert
An extremely dry area with little water and few plants
subtropical desert
A biome prevailing at approximately 30° N and 30° S, with hot temperatures, extremely dry conditions, and sparse vegetation.
rain shadow desert
A dry area on the lee side of a mountain range. Many middle-latitude deserts are of this type.
polar desert
a high-latitude region that receives little precipitation
steppe
sparse, dry, treeless grassland
loess
Wind-blown silt, mainly formed from glacial processes.
sand dunes
hills of sand shaped by the wind
pedestal rock
an isolated erosional mass of rock supported by or balanced on a pedestal formed by differential weathering and erosion
ventifacts
Rock with abraded surfaces formed in deserts.
alluvial fans
a triangle-shaped deposit of gravel, sand, and even smaller pieces of sediment, such as silt created as flowing water interacts with mountains, hills, or the steep walls of canyons
bajada
A group of several alluvial fans that have come together and formed a single surface.
playa lake
A playa is a dry, vegetation-free, flat area at the lowest part of an undrained desert basin.
playa
A dry lake bed in a desert valley.
Inselbergs
Isolated piece of bedrock which sticks above an alluvial surface.
pediment
a gently sloping erosion surface or plain of low relief formed by running water in arid or semiarid region at the base of a receding mountain front.
