Provide 4 facts about the Respiratory system. plz help i was out and i did not learn bout this

1. There are 12 parts of the respiratory system

2. Its main purpose is to exchange gasses in and out of the body

3. It is made up of a organs and muscle tissues

4. Lungs are the only organs that can float on water, and they are part of the respiratory system

Explanation:

your answer would b. the missisipi river

hope i you : )

answer; formal diagnosis (vera wand formal dress);