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.
They are doing a lot of stuff
Answer:
es las seis quince , quince is 15 and seis is 6
Answer:
Menerals are the substance which are found on the surface of the earth.
Explanation:
Menerals heardness means the menerals getting hard .
