whoneedseducation
whoneedseducation
09-05-2017
Biology
contestada
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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lrcyyy
lrcyyy
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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