Explain why homeostasis is important to your body's functioning.
- Iti is important for the bodys functioning because homostatis is the process by wich your body mantains a internal stability. As this stability is important because with out it your tissues could not survive.

Give an example of an organ that exchanges chemicals, and explain how its structure allows this.
- Intersitial fluid. Fills the gaps between cells in a tissue. Chemicals traveling in blood and tissue cells pass through interstial fluid.

Give three examples of ways your skin helps maintain homeostasis in your body.
-Skin provides a physiscal barrier against dirt and microorganisms enter the body
- By responding to stimuli as changes in body temperature and water content.
- Hair. In top of your head protects your scalp from ultraviolet radiation. Also an insulation from outisde temperature changing. And eyebrows, eyelashes prevent dirt and smal particles to enter your eye.

Explain one way that your body maintains a constant temperature while outside on a cold day.
By shivering caused by a rapid contraction of skeleton movement.