Final answer:
In the alveoli, oxygen is taken in during gas exchange while carbon dioxide is released.
Explanation:
During gas exchange in the alveoli, oxygen (O2) is taken in and carbon dioxide (CO2) is released. This process occurs in the respiratory system, where oxygen is absorbed into the bloodstream and carbon dioxide is expelled as a waste product.
Learn more about Gas exchange in the alveoli here:
https://brainly.com/question/29083163
