IDNLearn.com provides a platform for sharing and gaining valuable knowledge. Discover reliable and timely information on any topic from our network of experienced professionals.
Sagot :
Answer:
External respiration is the exchange of gases with the external environment, and occurs in the alveoli of the lungs.
The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. External Respiration. Exchange of gases between air and blood at pulmonary capillaries (Alveoli) is the second stage. So it would be the 2nd stage
We appreciate your contributions to this forum. Don't forget to check back for the latest answers. Keep asking, answering, and sharing useful information. Find precise solutions at IDNLearn.com. Thank you for trusting us with your queries, and we hope to see you again.