List six kinds of epithelium based on numbers of cell layers and shape of cells

1. Simple squamous epithelium
The cells are flat and only one layer.
2. Simple cuboidal epithelium
The cells are cuboid and only one layer.
3. Simple columnar epithelium.
The cells are columnar and only one layer.
4. Stratified squamous epithelium
The cells are flat and containing several layers.
5. Stratified cuboidal epithelium
The cells are cuboid and containing several layers.
6. Stratified columnar layer
The cella are columnar and containing several layers.

A) 4 amusingb)alpha particle is a helium nucleus. it contains 2 protons and 2 neutrons.c)alpha particle has charge of +2.