RespirationEvery human needs the airthat contain oxygen for breathing Wihout it, we won't live and we can't do our daily activity. But, have you ever thought about the process of respiration? First, the air enters through our nose. In the nose, it will be warned by the mucus membrane and it

also will be cleaned by the solf hairs in the nose. After that, it flows through the throat, larynx and trachea. And if there is a strange thing which is brought by air, it will be refused by a web which is located in the trachea.
Then, the air flows through a brach of bronchus called bronchioles. The last t enters a branch of bronchioles called alveolus. Alveolus is collection of the lung's bubble and carbon dioxide happenns. That's how respiration happens that we do all the time because we are living creatures .

1. The text mainly explains....
a human breath
b. the parts of our throat
c. the gases for respiration
d. the process of respiration
e. The description of the human thouat ​