Cell division
 Cells are the 'building blocks' of life, and cell division is a basic feature of life. For simple unicellular organisms like amoeba, one cell division reproduces the entire organism. On a larger scale, cell division can create offspring from multicellular organisms, such as plants that grow from cuttings. But most importantly, cell division enables organisms that are able to sexually reproduce to develop from the one-celled fertilised egg zygote. After growth, cell division allows for continual renewal and repair of the organism. And binary fission is where a cell splits in two.