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.
Answer:
everything about cells
Explanation:
you told me to tell you that, and this answer is reasonable
but if you want you can write everything about cells on your test or homework and say you were too tired, sleepy, exhausted, and utterly brainwrecked.
Answer:
B) between the Persian Gulf and the Gulf of Oman
The answer would be Cement,Bricks, and rock salt because in Florida they mine for hard materials
Answer:
a) snRNA
Explanation:
The association of small nuclear RNA (snRNA) and some specific proteins forms small nuclear ribonucleoprotein complexes. Some complexes are spliceosomes, molecular machines -made up of a snRNA and about 80 proteins- that remove introns from pre-mRNAs via successive phosphoryl transfer reactions.
