Personal Hygiene Program
I think this is right
Epithelial cells are packed tightly together. The cells form a continuous sheet forming a barrier between internal organs and the outside environment. It protects the tissues that lie beneath from physical trauma, invasion of pathogens, toxins, radiation, desiccation etc.
A; optimism is the tendency to remain hopeful and confident about the future-- an optimistic person has a tendency to expect positive outcomes, so they generally experience less stress than pessimistic or other types of people.
