The presence of a layer of inert and rigid substance around each of their cells is characteristic of plants.
A cell wall contains a cell membrane. The cell wall is a fairly strong resistant layer because of osmotic forces and their growth. They are located outside the plasma membrane in plant cells, fungi, algae, bacteria and archaea.
According to discovering made in relation to evolution, the Australopithecus Africanus (discovered in 1924), the Australopithecus Garhi (discovered in 1990), and the Homo Habilis (discovered in 1960) all shared the same period - 2.5-1.0 MYA.
