Question

WHAT DO YOU MEAN BY CO - INCIDENCE ​

Answer 1

Explanation:

The respiratory system, also called the gas exchange system, is the body getting rid of carbon dioxide and taking in oxygen. Carbon dioxide, a waste product, goes out of the body. Oxygen, which the body needs, comes in. The lungs are the main organ to do this.

Answer 2

Answer:

coincidence noun (SAME TIME)

an occasion when two or more similar things happen at the same time, especially in a way that is unlikely and surprising: You chose exactly the same wallpaper as us - what a coincidence!