comes from the earth's crust<span />
Explanation:
The interior of the lungs is made up of spongy tissues containing many capillaries and around 30 million tiny sacs known as alveoli.
The alveoli are cup-shaped structures found at the end of the terminal bronchioles and surrounded by capillaries.
Answer:
i think its D
Explanation:
if thats wrong then im sorry lol
It sounds like conglomerate rock, which is made of other pieces of rock stuck together.
