A river delta is a landform that forms from deposition of sediment carried by a river as the flow leaves its mouth and enters slower-moving or standing water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or (more rarely) another river that cannot transport away the supplied sediment.Despite a popular legend, this use of the word delta was not coined by Herodotus.his alluvium builds up to form the river delta. When the flow enters the standing water, it is no longer confined to its channel and expands in width. This flow expansion results in a decrease in the flow velocity, which diminishes the ability of the flow to transport sediment.
All the different types of sex cells undergo meiosis while mitosis only occurs in no sex cells or what is known as somatic cells. Spermatozoa and ova (also known as gametes) are the two most important types of cells that undergo mitosis and meiosis.
Answer   reproductive cells or you can also say the 23rd pair in the chromosome of the reproductive cell under goes the meiosis and the 23rd pair is called sex chromosome â¦ Germ cells are the only cells that can undergo meiosis as well as  mitosis.