A unique feature common to both the alveoli of lungs and the villi of the intestine, is that both.

A unique feature common to both the alveoli of lungs and the villi of

1.	A unique feature common to both the alveoli of lungs and the villi of the intestine, is that both.
Answer» A unique feature common to both the alveoli of lungs and the villi of the intestine, is that both.