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OpenStudy (anonymous):
In which part of the human respiratory system does actual oxygen exchange take place? A. bronchi B. trachea C. diaphragm D. alveoli
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OpenStudy (anonymous):
@anonymous_user ^.^
OpenStudy (anonymous):
@JackleBee
OpenStudy (anonymous_user):
alveoli
OpenStudy (anonymous):
yea i say d
OpenStudy (anonymous):
Thanks
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