Answer:
respiration is a process by which the exchange of gas takes place due to the help of lungs. It releases energy in our body and exhales carbon dioxide out of the body
Explanation:
1) respiration can be divided into three types:- internal, external and cellular respiration.
2) the lungs work closely with circulatory system to pump blood cells rich with oxygen to supply it to different parts of the body
3) a sticky fluid called mucus is present in the lungs to collect all bacteria, germs and dust that enter our body and it expelled when we cough or sneeze.
