I think the respiratory system and circulatory system
It's is the parenchyma tissues which are a group of thing cells made of thick walls with cellulose
The correct answer is insertion!
a G was added in the third sequence!
hope this helps!!
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.
