Answer:
found lining many areas that contact the external environment
plays a role in protection
Explanation:
Explanation: Epithelial tissue is composed of cells laid together in sheets with the cells tightly connected to one another. Epithelial layers are avascular, but innervated. Epithelial cells have two surfaces that differ in both structure and function.
They are called hand antiseptics.
Can we have a picture of what u need
Answer: O Diffusion moves particles across the cell membrane from areas of high concentration to
areas of low concentration
Explanation: