The surface of alveoli is thin and moist, alveoli has a very large surface area in total;plenty of room for gas exchange, and the surface of alveoli is covered with capillaries.
Answer:
1. ven 2. la
Explanation:
I'm not sure exactly, but I think those are the answers based from what I see from the blanks of the sentences.
Answer:
hablo= talk
necesitamos= needs
estudian= study
ensenia= teach
Explanation:
i would say the study one so estudian
