Which one of the following types of plains is not formed by the action of the riven?

Solution (By Examveda Team)

Loess plains is not formed by the action of the river. Loess is a sedimentary deposit of mineral particles which are finer than sand but coarser than dust or clay, deposited by the wind. Loess is a type of silt which forms fertile topsoil in some parts of the world. Loess deposits are usually a few meters thick. The soil has few clay particles to hold it together.