whoneedseducation whoneedseducation

09-05-2017
Biology

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what is an exchange surface?

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xmuscle62 xmuscle62

09-05-2017

it is an answer that is most cetainly a correct one

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10-05-2017

Gas exchange. The air sacs (alveoli) have a very large total surface area and a very good blood supply. There is an exchange of gases between the air sacs and their surrounding capillary blood vessels.

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