Answer:
excretion is the action of expelling waste from one's body.
Explanation:
air water food - good luck
This structure is called the epiglottis. This flexible leaf-shaped cartilage serves as a flap that covers the larynx to prevent food and liquids from entering the airway and the lungs. It is open when we breathe which allows air to enter into the larynx.
Answer:
I do not know
Explanation:
You did not explain it well.
