What is Loess plain?
Answer:
Loess is an aeolian sediment produced by wind-blown silt deposition, usually in the size range of 20-50 micrometers,
It consists of Twenty percent or less clay and the equilibrium of sand and silt components that are loosely cemented by calcium carbonate.
Therefore, the loess plains are flat regions covered by such deposits. This helps to make farmland very fertile.