Answer:
B
Explanation:
Summer, because the sun is closer to the northern hemisphere, therefore making it warmer
<span>Carbon dioxide, a waste product of
metabolism, travels from the blood to the alveoli, where it can be
exhaled. Between the alveoli is a thin layer of cells called the
interstitium, which contains blood vessels and cells that help support
the alveoli.</span>
Answer+ <span>are concentrated along the central coasts of both nations.</span>