It helps with the optic nerve, if you give me options i can help answer. Sorry if I didnt help :)
If the inner lining of the air sacs neither thin nor highly vascularized, then it can be inferred that AIR SACS ARE CANNOT BE THE SITES OF GASEOUS EXCHANGE BETWEEN AIR AND BLOOD. Air sacs are generally lined with mucus and surrounded with blood capillaries.
In case of birds, air sacs play an important role in respiratory system.
C. Protective over young cubs
''' offspring is called
heritable
The wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze.
This causes the low surface pressure to shift to over the ocean during the night and the high surface pressure to move over the land.
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Air above land warms quicker than air over water.</em></u></h2>