Epithelial tissue is the type of tissue that lines the body cavities.
This might help,the presence of hydrochloric acid creates an acidic environment within the stomach that is needed to convert pepsinogen to pepsin. Mucus that is produced by the epithelial cells of the stomach help protect the lining of the stomach from the corrosive hydrochloric acid and pepsin.
Fungi because they can break down any dead orginisms and be eaten by other orginisms.
The path electrons take to orbit the nucleus is called shell.
