An instructor explains that the alveoli are air sacs encircled by tiny capillaries and that oxygen moves via diffusion from an area of higher concentration to an area of lower concentration. A student identifies this process as

Name: An instructor explains that the alveoli are air sacs encircled by tiny capillaries and that oxygen moves via diffusion from an area of higher concentration to an area of lower concentration. A student identifies this process as
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The Answer is B

An Instructor Explains That the Alveoli Are Air Sacs Encircled