Question

D. Answer the following questions in brief.
6. Why do we need to breathe out carbon dioxide?​

Answer 1

Our body needs oxygen to obtain energy to fuel all our living processes. Carbon dioxide is a waste product of that process. The respiratory system, with its conduction and respiratory zones, brings air from the environment to the lungs and facilitates gas exchange both in the lungs and within the cells.

Answer 2

hope it's helpful for you