Answer:
Oxygen passes from inside the alveoli through the thin walls and dif- fuses into the blood. At the same time, carbon dioxide waste passes from the blood into the alveoli.
Explanation:
Answer:
Your answer would be D :)
Explanation:
A Sticking to a nutrition plan
You can tell by Crying... If the baby is in very serious pain she / he will scream and not stop until releive if the baby is in very little to no she/he will just make very fant sounds and you kind of can sens when a baby is in pain ...