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.
Both diploid and haploid cells can undergo mitosis. This makes a lot of sense, because mitosis is essentially like making a photocopy: it creates a perfect reproduction of what you started with. Therefore, if a diploid cell undergoes mitosis, the result is two identical diploid cells (2n â2n).f a haploid cell undergoes mitosis, which is something certain types of plant and fungus do as part of their normal life cycles, the end result is two identical haploid cells (nân). In meiosis, however, you start with a diploid cell that divides twice to produce four haploid cells.