External Respiration takes place in the Trachea. When oxygen and co2 "switch" its where they connect and making this external respiration!
I hope this helps you!
Answer:
Reproduce more successfully than organisms who are less suited for the same environment.
Explanation:
If they are well suited they don't necessarily have to be too big or too small small.
Oxygen and Carbon Dioxide are the two gases being exchanged in the alveoli. Carbon Dioxide diffuses blood into the air, and oxygen diffuses from the air in the alveoli into the blood.
